Question

25, 8, 10, 35, 5, 45, 40, 30, 20 What is the lower quartile of the given data set? A. 5 B. 8 C. 9 D. 10

Answer 1

The lower quartile is the mean of the lower half of the data set, not incuding the median value. In this case, the lower half is 5, 8, 10, 20 and the median is 9.