Determine the interquartile range of the following numbers:

42, 51, 62, 47, 38, 50, 54, 43

Give the interquartile range of a data set with the following characteristics.

Mean: 72.1

Median: 70

Standard deviation: 4.6

Given the following set of data, what is twice the interquartile range?

Determine the first quartile and third quartile from the following list:

Identify the first and third quartiles for the following set of numbers.

{11, 14, 9, 2, 27, 26, 5, 8, 19, 10, 12, 6}

Salespeople who land in the top quartile of average customer satisfaction ratings at the end of the year receive a bonus. Among the set of average ratings below, what is the cutoff for receiving the bonus?

{98, 55, 67, 88, 85, 91, 83, 65, 77, 83}

In the above data set, which of the following represents the 3rd Quartile (Upper Quartile)?

Find the first quartile of the following data set:

Find the third quartile of the following data set:

In the following set of data, which number represents ?