Author Question: How do you calculate the interquartile range for a data set? a. Take the highest value minus the ... (Read 79 times)

2125004343 · **on:** Jul 24, 2018

How do you calculate the interquartile range for a data set?
a. Take the highest value minus the lowest value and divide it by four.
b. Subtract the value of the lower quartile from the upper quartile.
c. Subtract the value of the upper quartile from the lower quartile.
d. Divide the data set into four equal parts and find the range between each of the resulting quarters.

Question 2

A random sample of 25 liberal arts colleges in the U.S. was selected, and the average cost per student was recorded for each school. The following five-number summary was calculated for this data set: lowest = 17,554; lower quartile = 23,115; median = 26,668; upper quartile = 45,879; highest = 102,262 . Using the definition of outlier discussed in your textbook, is there an outlier in this data set? Explain your answer.

Expo · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

B

Answer to Question 2

YES. THE HIGHEST AMOUNT, 102,262 IS MORE THAN 1.5 TIMES THE IQR AWAY FROM THE UPPER END OF THE BOX.