AP Statistics Question Index

AP IndexYearNumberGeneral TopicCourse Description TopicsPartName2009B6Statistical InferenceLogic of confidence intervalscdeSurvival rates2009B6Statistical InferenceLarge sample confidence interval for the difference in proportionsbSurvival rates2009B6Planning a StudyBlindingaSurvival rates2009B5Anticipating PatternsSimulation of sampling distributionsbFilling machine2009B5Statistical InferenceSignificance test for a meanaFilling machine2009B4Statistical InferenceConcept of powerbColored pellets and birds2009B4Planning a StudyRandom assignmentaColored pellets and birds2009B3Statistical InferenceLarge sample test for a difference between two proportionsabCPR vs. cardiopump2009B2Anticipating PatternsAddition rule, multiplication rule, conditional probability, independencecELISA2009B2Anticipating PatternsInterpreting probabilityabELISA2009B1Exploring DataEffects of changing units on summary measuresbGas tax2009B1Exploring DataBoxplotsaGas tax20096Exploring DataMeasuring spreaddAssessing normality20096Statistical InferenceSimulation of sampling distributionsbcAssessing normality20096Statistical InferenceNull and alternative hypothesesaAssessing normality20095Statistical InferenceLogic of significance testing - type I and type II errorscCPR20095Statistical InferenceLogic of significance testingbCPR20095Statistical InferenceP-valuesaCPR20094Statistical InferenceLogic of confidence intervalsbFire response times20094Statistical InferenceLarge sample confidence interval for the difference in proportionsaFire response times20093Planning a StudySources of bias and confoundingbFrog anatomy20093Planning a StudyRandom assignmentaFrog anatomy20092Anticipating PatternsSampling distribution of a sample meancStopping distance20092Anticipating PatternsBinomial distributionbStopping distance20092Anticipating PatternsNormal distributionaStopping distance20091Statistical InferenceNull and alternative hypothesescPart-time jobs20091Exploring DataConditional relative frequencies and associationbPart-time jobs20091Exploring DataComparing distributions using bar chartsaPart-time jobs2008B3Statistical InferenceEstimating population parametersabBraking distance2008B6Exploring DataAnalyzing patterns in scatterplotsabMorton's neuroma2008B1Exploring DataComparing distributions of univariate dataaStudent-teacher ratio2008B4Planning a StudyCompletely randomized designaMusic and blood pressure2008B4Statistical InferenceConcepts of Type I and II errorsbMusic and blood pressure2008B1Exploring DataConstructing and interpreting graphical displays of univariate dataaStudent-teacher ratio2008B6Exploring DataDeveloping a criterion for identificationdMorton's neuroma2008B1Statistical InferenceLogic of significance testingbStudent-teacher ratio2008B5Anticipating PatternsMean and standard deviation for sums and differences of random variablesaSnake gulch railroad2008B2Statistical InferenceProperties of point estimatorsabcGood estimators2008B6Statistical InferenceTest for a difference between two means (paired)cMorton's neuroma2008B5Anticipating PatternsNormal distributionbcSnake gulch railroad2007B2Anticipating PatternsBinomial distributionbPet ownership2007B6Statistical InferenceConfidence interval for the slopebExtinct species2007B1Exploring DataConstructing graphical displaysaEconomics test2007B4Exploring DataCorrelation and linearitycHeights2007B2Anticipating PatternsDiscrete random variables and their probability distributionsaPet ownership2007B6Anticipating PatternsIndependencecExtinct species2007B1Exploring DataInterpreting graphical displays of univariate databcEconomics test2007B6Statistical InferenceLarge sample test for a difference between two proportionsaExtinct species2007B6Exploring DataLeast Squares Regression LinedExtinct species2007B4Exploring DataLeast Squares Regression LineacHeights2007B3Planning a StudyRandom assignmentbWindows2007B3Planning a StudyRandomized block designaWindows2007B4Exploring DataResidualsbHeights2007B2Anticipating PatternsSampling distribution of a sample meancPet ownership2007B5Statistical InferenceTest for a difference between two means (unpaired)Lowering cholesterol2006B3Anticipating PatternsAddition rule, multiplication rule, conditional probability, independencebIron Byron2006B6Anticipating PatternsBinomial distributioncTasty juice2006B6Planning a StudyCharacteristics of a well-designed experimentfTasty juice2006B5Planning a StudyConfoundingdTractor pulling2006B1Exploring DataInterpreting graphical displays of univariate dataabcdReal estate sales2006B6Statistical InferenceLarge sample test for a proportionbTasty juice2006B2Statistical InferenceLarge sample confidence interval for the difference in proportionsaProducing parts2006B2Statistical InferenceLogic of confidence intervalsbProducing parts2006B6Statistical InferenceLogic of significance testingdeTasty juice2006B3Anticipating PatternsNormal distributionacIron Byron2006B6Statistical InferenceNull and alternative hypothesesaTasty juice2006B5Planning a StudyRandom assignmentbTractor pulling2006B5Planning a StudyReplicationcTractor pulling2006B4Statistical InferenceTest for a difference between two means (paired)Dexterity training2006B5Planning a StudyTreatments, control groups, experimental unitsaTractor pulling2005B2Anticipating PatternsCombining independent random variablesbConcert tickets2005B4Statistical InferenceConfidence interval for a difference between two meansaTomato plants2005B5Statistical InferenceConfidence interval for the slopecWalking speed2005B2Anticipating PatternsDiscrete random variables and their probability distributionsaConcert tickets2005B6Anticipating PatternsExploring random phenomena using simulationsdMilk containers2005B1Exploring DataInterpreting graphical displays of univariate dataaExam Scores2005B5Exploring DataInterpreting graphical displays of univariate databWalking speed2005B5Exploring DataLeast Squares Regression LineaWalking speed2005B4Statistical InferenceLogic of confidence intervalsbTomato plants2005B2Anticipating PatternsMean and standard deviation of a random variablecConcert tickets2005B3Planning a StudyPlanning and conducting experimentscMosquito repellent2005B6Anticipating PatternsSampling distribution of a sample meancMilk containers2005B6Statistical InferenceSignificance test for a meanaMilk containers2005B1Exploring DataSummarizing distributions of univariate databExam Scores2005B1Exploring DataSummarizing distributions of univariate datacExam Scores2005B6Anticipating PatternsNormal distributionbMilk containers2005B3Planning a StudyTreatments, control groups, experimental unitsaMosquito repellent2005B3Planning a StudyTreatments, control groups, experimental unitsbMosquito repellent2004B1Exploring DataAnalyzing patterns in scatterplotsabMoon craters2004B5Exploring DataBoxplotsaThai dogs and jackals2004B4Statistical InferenceConfidence interval for a difference between two meansabHomework times2004B6Statistical InferenceLarge sample test for a difference between two proportionsaCapture - recapture birds2004B6ProbabilityLinear transformation of a random variablebCapture - recapture birds2004B3Anticipating PatternsNormal distributionabHopper cars2004B5Exploring DataOutliers and unusual featuresaThai dogs and jackals2004B5Planning a StudyPopulations, samples, and random selectionbThai dogs and jackals2004B6Planning a StudyPopulations, samples, and random selectioncCapture - recapture birds2004B1Exploring DataResidual plotscMoon craters2004B3Anticipating PatternsSampling distribution of a sample meancdHopper cars2004B2Planning a StudySources of bias in sampling and surveysabDinning hall survey2004B5Statistical InferenceTwo sample t procedures - independentcThai dogs and jackals2003B5Statistical InferenceChi-square test for goodness of fitcSkunk2003B2Anticipating PatternsConditional probabilitybAge and annual income2003B4Planning a StudyConfoundingdCoffee and cholesterol2003B4Planning a StudyControl groupsbCoffee and cholesterol2003B5Anticipating PatternsExpected valuebSkunk2003B2Anticipating PatternsIndependencecAge and annual income2003B2Anticipating PatternsInterpreting probabilityaAge and annual income2003B6Statistical InferenceLarge sample confidence interval for a proportionabcHMO2003B3Statistical InferenceLarge sample test for a difference between two proportionsbVitamin C2003B1Exploring DataLeast Squares Regression LinebHours of study and work2003B6Statistical InferenceMeaning of confidence levelaHMO2003B1Exploring DataOutliers and influential pointsabHours of study and work2003B3Planning a StudyPlanning and conducting a studyaVitamin C2003B5Anticipating PatternsProbability of independent eventsaSkunk2003B4Planning a StudyRandom assignmentaCoffee and cholesterol2003B4Statistical InferenceTwo sample t procedures - independentcCoffee and cholesterol2002B1Exploring DataAnalyzing patterns in scatterplotsacSwine and ammonia2002B5Exploring DataBoxplotsaObstacle course2002B3Planning a StudyCharacteristics of a well designed and well conducted experimentaPain relief from magnets2002B6Statistical InferenceChi-square test for homogeneitybBiology majors2002B5Exploring DataComparing center and spreadcObstacle course2002B2Anticipating PatternsConditional probabilitycAirline overbooking2002B1Exploring DataCorrelation and linearitybcdSwine and ammonia2002B2Anticipating PatternsDiscrete random variables and their probability distributionsaAirline overbooking2002B4Exploring DataExploring databSocial security survey2002B5Exploring DataInterpreting graphical displays of univariate datacObstacle course2002B2Anticipating PatternsMean (expected value) of a random variablebAirline overbooking2002B4Statistical InferenceMeaning of confidence level and confidence intervalsaSocial security survey2002B5Exploring DataMeasuring spread - IQRbObstacle course2002B5Exploring DataMeasuring spread - rangebObstacle course2002B3Planning a StudyRandomized block designbPain relief from magnets2002B6Exploring DataShapecBiology majors2002B3Planning a StudyTreatments, control groups, random assignmentaPain relief from magnets2002B6Statistical InferenceTwo sample t procedures - independentaBiology majors20083Anticipating PatternsAddition rule, multiplication rule, conditional probability, independencebcdArcade game20084Exploring DataAnalyzing patterns in scatterplotsabTemperature and reliability20082Planning a StudyCharacteristics of a well-designed and well-conducted surveycSchool board survey20085Statistical InferenceChi-square test for goodness of fitabMoose20083Anticipating PatternsCombining independent random variablesbArcade game20081Exploring DataComparing distributions of univariate dataaSugary cereal20081Exploring DataEffects of changing units on summary measuresbSugary cereal20086Exploring DataLeast Squares Regression LinebMagnet schools20084Anticipating PatternsMean and standard deviation for sums and differences of random variablescTemperature and reliability20083Anticipating PatternsMean of a random variableaArcade game20081Exploring DataMeasuring center: mean and mediancSugary cereal20082Planning a StudySources of bias in sampling and surveysabSchool board survey20086Statistical InferenceTest for a difference between two meansaMagnet schools20086Statistical InferenceTest for the slope of a least-squares regression linecdMagnet schools20072Planning a StudyBlockingcOld dogs20073Anticipating PatternsCentral Limit TheoremcFish length20071Exploring DataComparing distributions of univariate databStrawberries20072Planning a StudyCompletely randomized designbOld dogs20072Planning a StudyControl groupsaOld dogs20075Statistical InferenceLarge sample test for a difference between two proportionscDistracted driving20076Exploring DataLeast Squares Regression LineabdeEstimating distance20071Exploring DataLogic of confidence intervalscStrawberries20071Exploring DataMeasuring spread: standard deviationaStrawberries20073Anticipating PatternsNormal distributionbFish length20075Statistical InferenceNull and alternative hypothesesbDistracted driving20075Planning a StudyOverview of methods of data collectionaDistracted driving20075Statistical InferenceP-valuesdDistracted driving20073Anticipating PatternsSampling distribution of a sample meanaFish length20074Statistical InferenceTest for a difference between two means (paired)E. coli20076Statistical InferenceTest for the slope of a least-squares regression linecEstimating distance20063Anticipating PatternsAddition rule, multiplication rule, conditional probability, independencebDepth measurements20065Planning a StudyCharacteristics of a well-designed experimentcShrimps20066Statistical InferenceChi-square testcThermostats20063Anticipating PatternsCombining independent random variablesaDepth measurements20061Exploring DataComparing distributions of univariate dataaCatapults20065Planning a StudyCompletely randomized designbShrimps20064Statistical InferenceConfidence interval for a difference between two meansaHospital wait times20065Planning a StudyGeneralizability of results from observational studies, experimental studiesdShrimps20062Exploring DataLeast Squares Regression LineaSoapsuds20064Statistical InferenceLogic of confidence intervalsbHospital wait times20066Statistical InferenceLogic of significance testingdThermostats20066Statistical InferenceLogic of significance testingbThermostats20061Exploring DataMeasuring center - median and meancCatapults20063Anticipating PatternsNormal distributionaDepth measurements20066Statistical InferenceNull and alternative hypothesesaThermostats20063Anticipating PatternsSampling distribution of a sample meancDepth measurements20066Anticipating PatternsSampling distributionsfThermostats20062Anticipating PatternsSampling distributionsbSoapsuds20066Anticipating PatternsSimulation of sampling distributionseThermostats20062Statistical InferenceSlope of a least-squares regression linecSoapsuds20061Exploring DataSummarizing distributions of univariate databCatapults20065Planning a StudyTreatmentsaShrimps20051Planning a StudyCharacteristics of a well designed and well conducted studycNutrition20056Statistical InferenceConfidence interval for a difference between two meansaLead Paint20056Exploring DataConstructing graphical displaysbLead Paint20052Anticipating PatternsDiscrete random variables and their probability distributionscTelephone lines20052Anticipating PatternsDiscrete random variables and their probability distributionsdTelephone lines20053Statistical InferenceEstimating population parametersbGreat Plains Railroad20052Anticipating PatternsExpected value of a random variableaTelephone lines20051Planning a StudyGeneralizability of results from observational studies, experimental studiesbNutrition20053Planning a StudyGeneralizability of results from observational studies, experimental studiesdGreat Plains Railroad20055Planning a StudyGeneralizability of results from observational studies, experimental studiesaHigh School Diploma20051Exploring DataInterpreting graphical displays of univariate dataaNutrition20056Exploring DataInterpreting graphical displays of univariate datacLead Paint20054Statistical InferenceLarge sample test for a proportionBreakfast cereal20053Exploring DataLeast Squares Regression LinecGreat Plains Railroad20055Statistical InferenceMargin of errorbHigh School Diploma20053Exploring DataResidual plotsaGreat Plains Railroad20052Anticipating PatternsSampling distribution of a sample meanbTelephone lines20055Planning a StudySampling methodscHigh School Diploma20044Anticipating PatternsAddition rule, multiplication rule, conditional probability, independenceacAntibiotics plan20043Anticipating PatternsBinomial distributionaBrontosaurs20041Exploring DataBoxplotsaSwine20045Statistical InferenceChi-square test for independenceaHospital satisfaction20044Anticipating PatternsExpected valuebcAntibiotics plan20043Planning a StudyGeneralizability of results from observational studies, experimental studiesdBrontosaurs20043Statistical InferenceLarge sample test for a proportioncBrontosaurs20041Exploring DataMeasuring position - quartile, standard deviationbSwine20043Anticipating PatternsMultiplication rule for probabilitybBrontosaurs20046Statistical InferenceOne- and two-sided testscdCholesterol drug20041Exploring DataOutliers and unusual featuresaSwine20045Statistical InferenceProperties of point estimatorsbHospital satisfaction20042Planning a StudyRandom assignmentcShampoo20042Planning a StudyRandomized block designabShampoo20041Exploring DataShape of distributions of univariate databSwine20046Statistical InferenceSingle sample t proceduresbCholesterol drug20046Statistical Inferencet-confidence interval for a meanabCholesterol drug20033Anticipating PatternsBinomial distributioncMen's shirt sizes20031Exploring DataBoxplotsaWatch times20035Statistical InferenceChi-square test for independenceSurvey responses20031Exploring DataComparing center and spreadbWatch times20034Planning a StudyControl groupsbReducing stress levels20034Planning a StudyGeneralizability of results from observational studies, experimental studiesacReducing stress levels20036Statistical InferenceLarge sample confidence interval for a proportionbcShuttle bus company20031Statistical InferenceLogic of significance testingcWatch times20032Statistical InferenceLogic of significance testing - null and alternative hypothesisaClass action lawsuit20032Statistical InferenceLogic of significance testing - type I and type II errorsbClass action lawsuit20033Anticipating PatternsNormal distributionabMen's shirt sizes20036Anticipating PatternsProbability and interpreting graphsacdShuttle bus company20022Planning a StudyBlindingbBoot waterproofing20022Planning a StudyCharacteristics of a well designed and well conducted experimentaBoot waterproofing20024Exploring DataCorrelation and linearitybAirline costs20021Exploring DataInterpreting graphical displays of univariate dataabcEinstein theory20026Statistical InferenceLarge sample confidence interval for a proportionaComedy show survey20026Statistical InferenceLarge sample test for a difference between two proportionscdComedy show survey20024Exploring DataLeast Squares Regression LineaAirline costs20022Planning a StudyMatched pairs designaBoot waterproofing20023Anticipating PatternsMean and sd for sums and differences of independent random variablesbHigh school runners20026Statistical InferenceMeaning of confidence level and confidence intervalsbComedy show survey20023Anticipating PatternsNormal distributionacHigh school runners20024Exploring DataOutliers and influential pointscAirline costs20025Statistical InferenceStatistical Inference: Testing hypothesesaDream recall20025Statistical InferenceTwo sample t procedures - independentbDream recall20016Exploring DataAnalyzing patterns in scatterplotscGPA & Ph.D.20016Statistical InferenceInference for the slope of least-squares regression linebGPA & Ph.D.20016Exploring DataInterpreting graphical displays of univariate dataaGPA & Ph.D.20012Anticipating PatternsMean (expected value) of a random variableCopy machine20011Exploring DataMeasuring position - quartile, standard deviationcRainfall20011Exploring DataOutliers and unusual featuresabRainfall20016Exploring DataPredicted valuescGPA & Ph.D.20014Planning a StudyRandomized block designaPlanting trees20013Anticipating PatternsSimulation of a probability distributionabRadio Coupons20014Planning a StudyTreatments, control groups, random assignmentbPlanting trees20015Statistical InferenceTwo sample t procedures - matched pairsGeneric brand20001Exploring DataAnalyzing patterns in scatterplotsabcPain relievers20006Exploring DataAnalyzing patterns in scatterplotsdMarried couples height20005Planning a StudyBlindingcCholesterol levels20003Exploring DataCenter and spreadbComparing flexibility of men20005Planning a StudyCompletely randomized designaCholesterol levels20003Exploring DataConstructing graphical displays of univariate dataaComparing flexibility of men20004Planning a StudyGeneralizability of results from observational studies, experimental studiesbBaby walkers20006Statistical InferenceLarge sample confidence interval for a proportionaMarried couples height20002Statistical InferenceLogic of confidence intervalsabCave footprints20006Anticipating PatternsMean and sd for sums and differences of independent random variablesbMarried couples height20006Anticipating PatternsNormal distributionbMarried couples height20006Anticipating PatternsNormal distributiondMarried couples height20006Anticipating PatternsNotion of independence versus dependencecMarried couples height20004Planning a StudyObservational studybBaby walkers20002Planning a StudyPopulations, samples, and random selectionabCave footprints20005Planning a StudyRandomized block designbCholesterol levels20003Exploring DataShapebComparing flexibility of men20004Statistical InferenceTwo sample t procedures - independentaBaby walkers19996Exploring DataAnalyzing patterns in scatterplotscCoin flip19994Anticipating PatternsBinomial distributionbAuto batteries19992Statistical InferenceChi-square test for independenceHikers19993Planning a StudyConfoundingbcCavities19996Exploring DataCorrelation and linearitycCoin flip19995Anticipating PatternsDiscrete random variables and their probability distributionsaRolling dice19995Anticipating PatternsExpected valuebRolling dice19993Planning a StudyExperiment vs Observational studyaCavities19996Statistical InferenceInference for the slope of least-squares regression linecCoin flip19991Exploring DataLeast Squares Regression LinebcdAir travel19994Anticipating PatternsNormal distributionacAuto batteries19991Exploring DataResidual plotsaAir travel19991Exploring DataResidual plotseAir travel19996Statistical InferenceTwo sample t procedures - matched pairsabCoin flip19982Exploring DataAnalyzing patterns in scatterplotsbcDefective items19981Anticipating PatternsCentral Limit TheoremcSample mean19983Statistical InferenceChi-square test for homogeneitydButterfly19983Statistical InferenceChi-square test for independencebcButterfly19986Exploring DataInterpreting graphical displays of univariate datadeCultured pearls19982Exploring DataInterpreting histogramsaDefective items19985Statistical InferenceLarge sample test for a proportionabUniversity housing19984Exploring DataLeast Squares Regression LineaWeed killer19986Anticipating PatternsNormal distributionaCultured pearls19983Planning a StudyRandom assignmentabButterfly19984Exploring DataResidual plotsbWeed killer19981Anticipating PatternsSampling distribution of a sample meanabSample mean19986Anticipating PatternsSimulation of a probability distributionbcCultured pearls19976Exploring DataAnalyzing patterns in scatterplotsabcdeUsed cars19973Anticipating PatternsConditional probabilitybDisease testing19976Exploring DataCorrelation and linearityaUsed cars19971Exploring DataInterpreting graphical displays of univariate datacPopulation graph19974Statistical InferenceLarge sample test for a difference between two proportionsVoter poll19976Exploring DataLeast Squares Regression LineaUsed cars19971Exploring DataMeasuring center - medianaPopulation graph19971Exploring DataMeasuring spread - IQRbPopulation graph19972Planning a StudyPlanning and conducting experimentsFish tank19973Anticipating PatternsProbability - Multiplication rule and independenceaDisease testing19972Planning a StudyRandom assignmentFish tank19972Planning a StudyRandomized block design, including matched pairs designFish tank19976Exploring DataResidual plotsabcUsed cars19976Exploring DataTransformations to achieve linearitybcUsed cars19975Statistical InferenceTwo sample t procedures - matched pairsComputer chips

ModificationsCourse Description Topic# of OccurencesAddition rule, multiplication rule, conditional probability, independence4Analyzing patterns in scatterplots10Binomial distribution5Blinding2Blocking1Boxplots4Center and spread1Central Limit Theorem2Characteristics of a well designed and well conducted experiment2Characteristics of a well designed and well conducted experiment1Characteristics of a well designed and well conducted study1Characteristics of a well-designed experiment2Chi-square test1Chi-square test for goodness of fit2Chi-square test for homogeneity2Chi-square test for independence4Combining independent random variables3Comparing center and spread2Comparing distributions of univariate data4Completely randomized design4Concepts of Type I and II errors1Conditional probability3Confidence interval for a difference between two means3combinedConfidence interval for the difference between two means1combinedConfidence interval for the slope2Confounding3Constructing and interpreting graphical displays of univariate data1Constructing graphical displays2Constructing graphical displays of univariate data1Control groups3Correlation and linearity5Developing a criterion for identification1Discrete random variables and their probability distributions6Effects of changing units on summary measures1Estimating population parameters2Expected value3Expected value of a random variable1Experiment vs Observational study1Exploring data1Exploring random phenomena using simulations1Generalizability of results from observational studies, experimental studies7Independence2Inference for the slope of least-squares regression line2Interpreting graphical displays of univariate data11Interpreting graphical displays of univariate dataInterpreting histograms1Interpreting probability1Large sample confidence interval for a proportion4Large sample test for a difference between two proportions5combinedLarge-sample test for a difference between two proportions1combinedLarge sample test for a proportion4Large-sample confidence interval for the difference in proportions1removed hyphenLeast Squares Regression Line3combinedLeast-squares regression line9combinedLinear transformation of a random variable1Logic of confidence intervals5Logic of significance testing5Logic of significance testing - null and alternative hypothesis1Logic of significance testing - type I and type II errors1Margin of error1Matched pairs design1Mean (expected value) of a random variable2Mean and sd for sums and differences of independent random variables2Mean and standard deviation for sums and differences of random variables2Mean and standard deviation of a random variable1Mean of a random variable1Meaning of confidence level1Meaning of confidence level and confidence intervals2Measuring center - median1Measuring center - median and mean1Measuring center: mean and median1Measuring position - quartile, standard deviation2Measuring spread - IQR2Measuring spread - range1Measuring spread: standard deviation1Multiplication rule for probability1Normal distribution10combined with The Normal DistributionNotion of independence versus dependence1Null and alternative hypotheses3Observational study1One- and two-sided tests1Outliers and influential points2Outliers and other unusual features1Outliers and unusual features2Overview of methods of data collection1Planning and conducting a study1Planning and conducting experiments2Populations, samples, and random selection3Predicted values1Probability - Multiplication rule and independence1Probability and interpreting graphs1Probability of independent events1Properties of point estimators2P-values1Random assignment6Randomized block design5Randomized block design, including matched pairs design1Replication1Residual plots6Residuals1Sampling distribution of a sample mean2combinedSampling distribution of sample mean2combinedSampling distribution of the sample mean3combinedSampling distributions2Sampling methods1Shape2Shape of distributions of univariate data1Significance test for a mean1Simulation of a probability distribution2Simulation of sampling distributions1Single sample t procedures1Slope of a least-squares regression line1Sources of bias in sampling and surveys2Statistical Inference: Testing hypotheses1Summarizing distributions of univariate data3t-confidence interval for a mean1Test for a difference between two means1Test for a difference between two means (paired)3Test for a difference between two means (unpaired)1Test for the slope of a least-squares regression line2The normal distribution2combined with Normal DistributionTransformations to achieve linearity1Treatments1Treatments, control groups, experimental units3Treatments, control groups, random assignment2Two sample t procedures - independent5Two sample t procedures - matched pairs3