Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

GATHERING SAMPLES/SURVEY METHODS Vocab Matching (chapter 12)Match the vocab word on GATHERING SAMPLES/SURVEY METHODS to its definition.

Undercoverage Voluntary Sampling SystematicStratified Voluntary bias NonresponseCluster Convenience Sampling Simple Random Sample (SRS)Response Convenience bias

•A sample made of people who are easy to reach

•A type of sampling method in which sample members from a larger population are selected according to a random starting point and fixed periodic interval of size n (every nth subject)

•A subset of the population drawn when each individual member of the sample had an equal probability of being chosen from the population

•A sampling technique used when the population is divided into groups and n random group(s) are selected to survey. Everyone in those n chosen groups are surveyed

•A random sample that is drawn from a each group of a number of groups of a population in order to create a representative sample of the population

A sampling technique in which subjects self select to be a part of the study

•The bias that occurs when a group is not represented in the sample who may have a differing opinion or contribution to the survey response.

•The bias where the wording of the question influences the response or the interviewer influences the response with wording, unconscious nonverbal behavior, or with his/her relationship with the participant.

•The bias where the answers from the respondents who answer may differ from those who don’t respond- people do not respond to a survey because they elect not to/refuse or cannot respond. A set amount of people was selected.

The bias that occurs when only people with strong opinions respond to the survey. The survey was not sent out to a set amount of people

•The bias where proper randomization of the sample does not occur. The respondents are chosen, usually because it is easy to choose them.

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

EXPERIMENT DESIGN Vocab Matching (chapter 13)Match the vocab word on EXPERIMENTATION to its definition.

Blocking Factor Subjects/Experimental UnitsBlinding Response Completely RandomMatching Treatments LevelsPlacebo Prospective Observational StudyConfounding Variable Retrospective Obswervational Study

Control GroupThe participants in the study- who is being tested

What you are giving the participants- what you are testing

The different magnitudes of the factor

The different groups subjects are assigned to

What you are measuring in the end

A study in which no treatment is being assigned. Instead, subjects are chosen by the variable of study and the response is measured over time.

When the subjects do not know what treatment they receive*double- when the experimenters do not know which treatment was givenDividing subjects into groups by a given trait that may affect the response before assigning treatment

A treatment that simulates the exact same conditions as other treatments but does not apply the factor to the subjects

A study in which no treatment is being assigned. Instead, subjects are chosen by the variable of study and the response is measured by reviewing past records/results.

A substance used as a control group in which the subjects are not receiving the factor but believe they are (or might be)

Pairing very similar subjects and giving one one treatment and the other subject in the pair another treatment, then comparing them directlyDividing subjects into treatment groups without separating first. Numbering all subjects and using a random number generator to select the first n unique numbers that correspond to subjects to be put into the first treatment group. To continue this way until all subjects have been assigned.An underlying element that may affect and explain the response

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

(b) Name the sampling method used for Rania’s sample and a benefit for choosing this method

(c) Is it reasonable to generalize their findings about the number of soft drinks students consume to all high school students in the US? Explain.

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review

Name: ________________________________________________________________________________ Date: _________________________Unit 3 Review