MEASURES OF CENTRAL TENDENCY
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
What is the mean of the following ages?
24, 25, 32, 28, 26? ________________