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Definitions MMMRAll About
GraphsSampling Grab Bag
4
This number is found by adding all of the numbers up and dividing by however many numbers we have.
7
A histogram has intervals.A bar graph has categories.
There are no spaces between the bars in a histogram.
18
This is the median of the following stem-and-leaf plot: 1 | 2 2 7 2 | 3 3 3 4 4 5 6 7 8 8 9 3 | 0 1 4 6 4 | 0 6
22
This lists one place value on one side of a vertical bar, and the other in
numerical order on the other side. It usually also gives a key.
26
Use the double box plot below.
This is the difference between the ranges of 7th and 8th grade
donations.
28
Use the back-to-back stem and leaf plot below.
This is the median of Cami’s Basketball Stats in 2008.
30
Use the line plot below.
This is the mean score of the restaurant survey rounded to the
nearest whole number.
32
What type of sampling is used below?
A hospital’s administration is interested in opening a gym for its
employees. They ask each member of the night-shift emergency room staff
if they would use it.
34
What type of sampling is used below?
Joe is concerned about the topsoil in his backyard. He divides the backyard into 5
equal sections, and then randomly removes 1-inch squares of topsoil from
each of the 5 sections to be tested.
36
Zack is trying to decide which golf course is the best. According to his random survey below, how many
people would vote for Rolling Meadows out of 150 people?
38
Amy captures and tags 75 monkeys. Later, she observes 200 monkeys
and 40 of them are tagged. Predict how many monkeys are in the
forest.
40
Using the mean of all three samples for chocolate ice cream, predict how
many people prefer chocolate ice cream out of 1600 people.
Chocolate Vanilla Mint Total
Sample 1 32 15 3 50
Sample 2 27 16 7 50
Sample 3 25 19 6 50
44
Mr. Roberts asks every 5th student that walks in his classroom if they
plan on attending the pep rally.
What type of sampling is used below?
46
Ms. Hernandez determined that 60% of her students in her classes
brought an umbrella to school when it rained. If she has a total of 150
students predict how many of them brought an umbrella.
48
Anna’s test scores are 98, 90, 93, and 89 on the last four tests she
took this semester in social studies. This is the score she needs on her
last test to get a mean of 90.
50
Using the mean of all three samples for vanilla ice cream and mint ice cream, predict how many more
people like vanilla than mint out of 1600 people.
Chocolate Vanilla Mint Total
Sample 1 32 15 3 50
Sample 2 27 16 7 50
Sample 3 25 20 5 50