Statistics Review

Students at a middle school participated in a walk-a-thon. The table shows the number of laps different students walked.

The lower quartile is _____.

How many students are there in Kristin’s class?

Tags

CCSS.3.MD.B.4

Kristin asked the students in her class how many miles they live from school. She recorded the results in a dot plot.

After completing parts B and C, what value did you calculate?

Which of the following statements is not true?

• The range of the heights is 18 inches.

• The median of the heights is 65 inches.

• The mean of the heights is 64 inches.

• The mode of the heights is 65 inches.

What is the mean absolute deviation of the data set below?

• 65

• 13

• 5

• 4.4

Elena researched the amount of food recommended for her 22-pound senior dog. She displayed the data in a dot plot. Which of the following statements is not true?

• The range is 1 cup.

• The units used to make the measurements are cups.

• The data is clustered around 1 1/2 cups.

• There were 8 brands researched.

• 41

• 20

• 15

• 45

The dot plot shows the number of hours the students in Ms. Ferro's class volunteer each month. Which of the following statements is not correct?

• There are a total of 17 students in Mrs. Ferro's class.

• Exactly 7 students volunteered for less than 7 hours.

• Less than half of the students volunteer for 9 hours or more.

• The mode is 6 and 10.

Students record the number of minutes they read at home. The box plot shows the summary of the results. Which statements best describe the data?

• A quarter of the students read for 30-40 minutes.

• The interquartile range is 30.

• About half the students read for 50 minutes or more.

• The average number of minutes read was 47.

The number of points in the first five games of basketball season are listed below. What is the mean number of points scored?