A Customer Service Center Keeps Track of the Number of Complaints

Multiple Choice

A customer service center keeps track of the number of complaints received each
Day about one of their new products. The numbers of complaints received over the last
11 day period are 19, 18, 22, 21, 17, 18, 22, 19, 16, 23, and 25. The IQR for this sample
Of data is

A) 25.
B) 22.
C) 18.
D) 9.
E) 4.