Choosing Best Measure of Center or Variability

What is the median of the following set of data?

• 25

• 23

• 14

• 21

What is the mode of the following set of data?

14, 21, 23, 25, 25

• 23

• 21

• 14

• 25

It is a measure of variability that you get when you subtract the smallest number in a set of data from the largest number.

• mean

• median

• mode

• range

What is the mean of the data set : 6, 35, 8, 20, 6, 16, 7?

• 12

• 13

• 14

• 15

What is the mode of the data set : 6, 35, 8, 20, 6, 16, 7?

(a)  

What is the best measure to describe the data set : 6, 35, 8, 20, 6, 16, 7?

• mean

• median

• mode

You sent the same email to 10 of your friends. The number of hours it took them to respond was: 1, 1, 1, 2, 2, 3, 4, 5, 5, and 25. What are the mean, median and mode of this date?

• 49, 2.5, 1

• 4.8, 2, 1

• 4.8, 2.5, 1

• 4.9, 2.5, 1

Which is the best measure of center best describes the data set 1, 1, 1, 2, 2, 3, 4, 5, 5, and 25?

(a)  

What is the median of the data set : 6, 35, 8, 20, 6, 16, 7?

• 20

• 8

• no median

• 35

Which measures are affected by the outlier? (you need to find the mean, median, and mode without the outlier to answer this)

• mean

• mean and median

• mean, median, and mode

• median