An industrial psychologist observed 8 drill-press operators for one working day. She recorded the number of times each operator pressed the "faster" button instead of the "stop" button to determine whether the design of the control panel was contributing to the high rate of accidents in the plant. The resulting scores were as follows: 5, 2, 8, 2, 3, 2, 4, 12 The median for this distribution is _________.
A) 2.00
B) 3.50
C) 3.00
D) 3.25

Question

Quizplus · Accepted Answer

To find the median, first, arrange the scores in ascending order: 2, 2, 2, 3, 4, 5, 8, 12. Since there are 8 scores (an even number), the median is the average of the 4th and 5th scores: (3 + 4) / 2 = 3.5.

An Industrial Psychologist Observed 8 Drill-Press Operators for One Working