Measures of Center Are Affected

Given the set of data below, what would be the most meaningful measure?
1, 1, 1, 1, 1, 1, 1, 1, 1, 21

• Mean

• Median

• Mode

• Range

If you have two numbers in the middle, you should

• add them together and divide by two

• find the number in between the two

• find the mean of the two numbers

• all of these

If 10 is added to every value in a set of data, what will happen to the value of the median?

• it will increase by 10

• it will decrease by 10

• it will stay the same

• it will both increase and decrease

calculate the median for the following set of scores

45, 69, 69, 87, 88, 92, 99, 100

• 87

• 55

• 87.5

• 99

The mode score on the 6th grade math test was 94! Which of these interpretations MUST be correct?

• 94 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 94

• A score of 91 was slightly below average.

A data set consists of the numbers 2, 2, 5, 6 and 15.  Which statement is true for this data?

• median > mean

• mean = mode

• mode < median

• median = mode

Use the table to find the mean

• 105

• 111

• 118

• 130

Find the Median of the data set

• 77

• 99

• 80

• 78.5

Find the Missing Value that would make the mean of the data set 25

• 22

• 23

• 24

• 26

Which class has the higher test score median? 

• Class #1

• Class # 2 

• The medians are equal

• The median is not shown here.