FRAME 22.

The first of these characteristics that we will discuss is the tendency for data to cluster

around some particular value or values.

This characteristic is often referred to as CENTRAL TENDENCY.

There are three measures of CENTRAL TENDENCY:

MEAN, MEDIAN, AND MODE

The ARITHMETIC MEAN is found by adding the values of a group of data and dividing the sum

by the number of items.

The term MEAN will be used in place of arithmetic mean in this text. For example, the mean of

the five test scores:

98, 100, 82, 75, 95, is

mean score = sum of the scores = 450 = 90

number of scores

5

QUESTION:

What is the mean of the following ages?

24, 25, 32, 28, 26? ________________