Question

Find the mean, median, and modes of the data set: 91, 93, 89, 97, 89, 98, 94, 93.

Answer 1

To find the mean, add up all the numbers in the data set and divide by the total number of numbers:

Mean = (91 + 93 + 89 + 97 + 89 + 98 + 94 + 93) / 8
Mean = 744 / 8
Mean = 93

To find the median, first arrange the numbers in order:

89, 89, 91, 93, 93, 94, 97, 98

Since there are 8 numbers, the median is the average of the two middle numbers:

Median = (93 + 94) / 2
Median = 187 / 2
Median = 93.5

To find the mode, identify the number that appears most frequently in the data set.

The modes in this data set are 89 and 93, each appearing twice.