Chapter 11 Test Review

Find a set of 5 items that has a range of 9, a mean of 15, a median of 14, and a range of 11.

• 11, 11, 13, 15, 20

• 5, 11, 14, 14, 31

• 11, 11, 14, 19, 20

• 6, 10, 14, 15, 15

Using the following data set, find the value of x so that the median is 66

42, 55, x, 80

• 58

• 60

• 72

• 77

Using the following data set, find the value of x so that the mean is 0.5

-11.5, 12, -14.5, x

• 15.5

• 16

• 16.5

• 17

What happens to the mean if the number 4 is taken out of the set:

24, 18, 4, 20, 22, 26, 22, 24

• Increases

• Decreases

• Stays the Same

What happens to the median if the number 18 is added to the following set:

74, 52, 65, 64, 58

• Increases

• Decreases

• Stays the Same

During the week, the daily low temperatures are 52, 45, 51, 45, and 48 (in degrees Fahrenheit). If a tempature of 50 is added, which statement is true about the data set. SELECT ALL THAT APPLY.

• The mean would decrease.

• The mean would increase.

• The median would decrease.

• The median would increase.

• The mode would increase.

A golf team's 6 members had the scores below in their most recent tournament:

70, 72, 74, 76, 80, 114

Which measure best describes the scores of the team?

• Mean because it's always better to find the average.

• Median because it is always better to find the median.

• Mean because the scores are all pretty close.

• Median because 114 is so much higher than the rest.

• Range because lower scores are better in golf.

Which of the following statements are true for the dot plot below? SELECT ALL THAT APPLY.

• The distribution is skewed right.

• The distribution is skewed left.

• The median is larger than the mean.

• The mean is larger than the median.

Using the box-and-whisker plot, SELECT ALL statements that would be considered true.

• The median is 54.

• The data is skewed right.

• 75% of the data lies between 52.5 and 59

• The spread is 4.5

• The IQR represents 50% of the data

• A. Mean and Mode

• B. Mean and Median

• C. Least and Greatest Value

• D. Lower and Upper Quartile