Here are some summary statistics for the recent English exam: lowest score = 31,mean score = 67,median = 81.2,range = 79,IQR = 60,Q1 = 27,standard deviation = 8.6.Between what two values are the middle 50% of the scores found?
A)31 and 110
B)67 and 81.2
C)27 and 87
D)16.75 and 50.25
E)20.3 and 60.9

Question

Quizplus · Accepted Answer

The middle 50% of scores are within the IQR, which is from Q1 (27) to Q3 (87). Therefore, the answer is C, which includes both Q1 and Q3 in the range.

Here Are Some Summary Statistics for the Recent English Exam