6th Grade Math Expressions Unit 8 Review

Which question is most likely to show statistical variability in its answer?

• How many seconds are equivalent to one minute?

• What is the sum of 5 and 4?

• How many months of the year begin with the letter a?

• On what day of the week were you born?

These data show the number of minutes various students needed to complete a weekly science test.

4 6 5 8 5 6 8 7

5 5 8 5 6 7 5 8

How many students does the set of data represent?

• 15

• 16

• 17

• 98

These data show the number of minutes various students needed to complete a weekly science test.

4 6 5 8 5 6 8 7

5 5 8 5 6 7 5 8

Suppose the data are to be displayed on a dot plot. What are the most sensible labels for the horizontal axis of the dot plot?

• 1, 2, 3, 4, and so on to 10

• 1, 2, 3, 4, and so on to 100

• 1, 2, 3, 4, and so on to 1,000

• 1, 2, 3, 4, and so on to 10,000

The areas of 15 islands in the Pacific Ocean are shown in the table.

Suppose the data are to be displayed in a histogram. What are the most sensible labels for the horizontal axis of the histogram?

• 1 to 10,000 and 10,001 to 20,000

• 1,001 to 2,000 and 2,001 to 3,000

• 1 to 1,000 and 1,001 to 2,000 and 2,001 to 3,000

• 1,001 to 1,400 and 1,401 to 1,800 and 1,801 to 2,200 and 2,201 to 2,600

A class of 10 students took an end-of-year language arts test. This dot plot shows the number of questions each student answered correctly.

What is the mean number of correct answers?

• 83.5

• 84.4

• 82.4

• 85.5

A class of 10 students took an end-of-year language arts test. This dot plot shows the number of questions each student answered correctly.

What is the median number of correct answers?

• 84.4

• 84

• 83.5

• 83

Use this box plot. Which two values are used to calculate the range of the data?

• 47 and 59

• 47 and 50

• 50 and 58

• 58 and 59

Use this box plot. What is the range of the data?

• 8

• 12

• 55

• 59

Use this box plot. Which two values are used to calculate the interquartile range of the data?

• 47 and 59

• 50 and 55

• 50 and 58

• 55 and 58

Use this box plot. What is the interquartile range of the data?

• 54

• 10

• 8

• 6