Effect of Measure of Center

What is the first quartile?

• 4

• 5

• 6

• 7

What percentage of the data is between 90 and 140?

• 25 %

• 50%

• 75%

• 100%

What is the interquartile range (IQR)?

• 4

• 64

• 60

• 8

How does the outlier in the data set below effect the mean?

• it increases the mean

• it decreases the mean

• it has no effect on the mean

• there is no outlier

What is the MEAN of the data set below?

• 14

• 18

• 31

• 90

What is the median of the data set?

• 18

• 20

• 22

• 51

What is the mode of the data set?

• 12

• 14

• 12 and 14

• no mode

What is the mean of the data below?

• 17

• 18

• 20

• 17.5

The __________ of the data set is the sum of the data divided by the number of pieces of data.

• third quartile

• mean

• measures of center

• mode

The __________ is the number or numbers that occur most frequently in a data set.

• average

• mode

• quartiles

• mean