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/