EXAMPLE 2.9.3

Compute the mean, median, and mode for this distribution of test scores:

92, 68, 80, 68, 84

EXAMPLE 2.9.3 SOLUTION

MEAN (arithmetic average)= (92+68+80+68+84) divided by 5 = 392 divided by 5 = 78.4

MEDIAN (the number in the middle when all values are arranged in numerical order):

68, 68, 80, 84, 92. In this list of five numbers, the third number is the middle number. 80 is the median

MODE (the number that occurs most frequently, if there is one):

68 is the mode