Which of the following are categorical data?

A.
numbers of inches of rain

B.
types of drinks

C.
lengths of movies (in minutes)

D.
weights of students

Which best describes a statistical question?

A.
a question that contains numbers

B.
a question about numbers

C.
a question about designing an quantitative experiment

D.
a question that anticipates an answer based on data that vary

Which graph or plot would be used to display each data point in a quantitative data set? Select two answers.

A.
dot plot

B.
stem-and-leaf plot

C.
histogram

D.
bar graph

Mr. Wong is a history teacher. In order to study how his 1st period class did on a 100-point test, he made the stem-and-leaf plot shown. Twenty-five students took the test.

The figure shows the stem-and-leaf plot labeled as Student Scores on History Test. In the plot, 6th Period Class represents the leaf. For 0 as stem, there is no value of leaf. For 1 as stem, there is no value of leaf. For 2 as stem, leaf is 9. For 3 as stem, leaves are 8, and 5. For 4 as stem, leaves are 9, and 7. For 5 as stem, leaves are 8, 5, 3, and 2. For 6 as stem, leaves are 8, 8, 6, 4, and 2. For 7 as stem, leaves are 9, 7, 6, 3, 3, and 1. For 8 as stem, leaves are 5, 0, and 0. For 9 as stem, leaves are 3, and 2. And for 10 as stem, there is no leaf. Below the plot, Key: for 7 as stem and 5 as leaf the value equals 75 points is labeled.

What conclusion can be drawn about the distribution of the data? Select two answers.

A.
The data distribution is approximately symmetric.

B.
The data distribution is skewed right.

C.
The data distribution is skewed left.

D.
There is an outlier in the data.

Classify each graph as approximately symmetric, skewed left, or skewed right.

Graph

Symmetric

Skewed Left

Skewed Right

What could 3|4 mean as the key on a stem-and-leaf plot?

A.
3

B.
4

C.
34

D.
43
Gary gave his class this survey.

In what month is your birthday?
How many siblings do you have?
How many pets does your family own?
To the nearest half hour, how many minutes each day do you play video games?
What color are your eyes?
Brown Black Blue Green Gray Other

Which data for the class survey would be best to display using a histogram?

A.
eye color

B.
number of pets

C.
birthday month

D.
video game playing time

In the histogram shown, which bin would include both of the data values 30 and 35?

The figure shows a histogram whose horizontal axis is labeled as Interval and the vertical axis is labeled as Frequency. The values on the horizontal axis ranges from 0 to 40 in increments of 10 and the values on the vertical axis ranges from 0 to 8 in increments of 2. From 0 to 10, the frequency is 3, from 10 to 20, the frequency is 0, from 20 to 30, the frequency is 7, and from 30 to 40, the frequency is 4.

A.
0–10

B.
10–20

C.
20–30

D.
30–40

Which of the following allows you to compare the frequency of intervals, but not the frequency of exact values?

A.
a dot plot

B.
a histogram

C.
a stem-and-leaf plot

D.
a circle graph

What type of table or graph do you use to help you make a histogram?

A.
a dot plot

B.
a frequency table

C.
a circle graph

D.
a bar graph