Lessons 7 and 8

Your friend swims on the school team. In his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. Which time listed for his next race would make the range larger?

• 23.2 seconds

• 25 seconds

• 26.1 seconds

• 27.2 seconds

You and your friends roll a die to decide who goes first in a game. The results of the rolls are shown in the table. What is the range of the data?

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On the board, your teacher shows an example of finding the range. One of the numbers is erased, leaving what is shown. Which of the following could NOT be true?

• The missing number is 20.

• The missing number is 25.

• The missing number is 28.

• The missing number is 30.

Study the data set shown. Then answer the questions below.

Enter a number that could be added to this data set that would not change the range. _______

Enter a number that could be added to this data set that would change the range

You and your friends roll a die to decide who goes first in a game. The results of the rolls are 2, 3, 2, 4, and 6.

What is the range of these data?

• 2

• 3

• 3.4

• 4

What is the middle number is a set of data?

• median

• range

• quartile 1

• quartile 3

Find the mode of these numbers:

2, 3, 4, 5, 5, 5, 7,

• 6

• 5

• 4

• 3

Find the range of these numbers:

2, 3, 4, 5, 5, 5, 7,

• 4

• 6

• 3

• 5

What is the term for the median of the lower half of the data?

• Lower Quartile
• Upper Quartile
• Median
• Maximum

What is the median of the data?
2, 7, 11, 12, 12, 16, 19, 21

• 2
• 12
• 17.5
• 24