Unit 1 Review

Determine whether the question is a statistical question.

How tall are students in your class?

• Yes

• No

Use the data to display a dot plot.

8, 6, 8, 6, 6, 4, 2, 5, 8, 3, 5, 2

Find the mode of the data.

0. 19, 15, 19, 19, 13, 14, 20, 22, 21, 18

Find the range of the data.

0. 1, 10, 54, 44, 95, 67

Identify the outlier in the data set.

88, 82, 88, 89, 84, 138, 83, 81, 83, 89, 86, 89

A group of seven 6th graders measure and record their heights. The height (in inches) are shown below.

57, 54, 59, 57, 61, 58, 60

What is the mean?

A group of seven 6th graders measure and record their heights. The height (in inches) are shown below.

57, 54, 59, 57, 61, 58, 60

What is the median?

The dot plot shows the weights (in pounds) of several dogs at an animal shelter. Find and interpret the number of data values.

• There are 5 dogs at the animal shelter.

• There are 7 dogs at the animal shelter.

• There are 10 dogs at the animal shelter.

• There are 14 dogs at the animal shelter.

Use clusters, peaks, or gaps to answer the statistical question, “What is the weight of a typical dog at the animal shelter?”

• 20 pounds

• 30 pounds

• 40 pounds

• 60 pounds

The stem-and-leaf plot shows student test scores. How many students score less than 16 points?