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Chapter Eight VocabularyCC 1
Vocabulary Word
Definition Picture Learn more…
box plot
(box and whisker plot)
a way to visually show data by using the median (middle number), first and third quartiles, minimum (smallest number) and maximum (largest number)
http://kfairburn.wikispaces.com/
https://gingkoapp.com
Learn How to Create a Box Plot - Video
distance how far away one place is from another
Distance = rate * time (d = r * t)
double-peaked a way to describe data
double peaked- has two high points
http://textbooks.cpm.org/
first quartile
(also lower quartile or Q1)
the median or middle number in the first half of a data set
http://www.mathematicsdictionary.com /
*If the median or quartiles fall between two numbers, add the two numbers and divide by 2.
Learn How to Find the First
Quartile - Video
http://hotmath.com
histogram a special type of bar graph that shows a range for each bar
The range should be equal amounts for all bars.
The bars in the graph should touch each other.
avoca37.org
www.studyzone.org
Histograms
Practice Histograms
interquartile range (IQR)
subtract the first (1st) quartile from the third (3rd) quartile
www.mathsisfun.com https://statsmethods.wordpress.com
More Information on
IQR
maximum the largest number
(highest value)
maximum or
www.mathsisfun.com
mean a way to measure data by:1. adding up all numbers2. divide that by how many numbers were added
(also known as the “average”)
http://passyworldofmathematics.com/
mean absolute deviation
the average distance away the data points are from the mean
http://www.mathsisfun.com/
measure of central tendency
different ways to measure data (mean, median, or mode)
www.eduplace.com
median a way to measure data by putting all of the numbers in order and then finding the middle number
www.mathisfun.com
*If the median falls between two numbers, add the two numbers and divide by 2.
http://hotmath.com
minimum the smallest number
(lowest value)
minimum or
www.mathsisfun.com
outliera number that is not close to the other numbers in a data set
-it lies out away from the others
http://www.mathsisfun.com/
http://www.a-levelmathstutor.com/
quartilesthe median, first and 3rd quartile make four equal parts to a box plot
http://www.regentsprep.org/
http://www.shmoop.com/
More Information
about Quartiles
range
http://www.regentsprep.org/
ratea type of ratio where there are two different units
Example Rates
miles per gallon
dollars ($) per pound
meters per second
ratio a comparison of two groups
3 Ways to Write Ratiosto 5 girls to 15 boys
: 5 girls : 15 boys
fraction 5 girls 15 boys
single-peakeda way to describe data
single-peaked- has only one high point
http://textbooks.cpm.org/
skewed a way to describe data
skewed- data is more on one side than the other
http://mathbitsnotebook.com
http://textbooks.cpm.org/
statistical questions
a question that will give you a variety or answers
1. How many siblings do the students in your class have?
2. How many texts do the students in your class send on
their phone in one month?
Video Discussing What is a Statistical
Question and What is Not
stem-and- leaf plot
a way to organize data into a chart
Stem= first digit(s) of the number
Leaf= the last digit of the number
mathisfun.com
http://www.bbc.co.uk/
symmetric a way to describe data
symmetric- when you draw a line down the middle, each side is the mirror image of the other
http://mathbitsnotebook.com
http://textbooks.cpm.org/
http://www.geometrycommoncore.com/
third quartile
(also upper quartile or Q3)
the median or middle number in the second half of a data set
http://www.mathematicsdictionary.com/
*If the median or quartiles fall between two numbers, add the two numbers and divide by 2.
http://hotmath.com
Learn How to Find the Third
Quartile- Video
time
http://www.istockphoto.com/
EXAMPLESa. 60 seconds = 1 minuteb. 60 minutes = 1 hourc. 24 hours = 1 dayd. 7 days = 1 weeke. 365 days ≈ 1 yearf. 52 weeks ≈ 1 year
http://textbooks.cpm.org/
uniform a way to describe data
uniform- most data is about the same amount
http://textbooks.cpm.org/