A. Which of the following statistics measure the center of a data set? (More tha

Question

A. Which of the following statistics measure the center of a data set? (More than one may apply)

a)variance

b)Interquartile range

c)range

d)standard deviation

e)median

f)mean

B. Which of the following statistics measure the spread or variability of a data set? (More than one may apply)

a)variance

b) standard deviation

c)mean

d)range

e)median

f)Interquartile range

C.When a data set has significant outliers, which of the following measures of the center and spread may be distorted, and therefore not appropriate for the data set? (More than one may apply)

a)mean

b)standard deviation

c)median

d)range

e)interquartile range

f)variance

Explanation / Answer

A.

Mean and median are used to measure the center of a data set
B.

Standard deviation,range and interquartile range are used to measure the spread or variability

C.
The mean and standard deviation are the best measures of center and spread because most statistical procedures require these measures. We use the median and interquartile range because these measures are not distorted by outliers

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