MATH

1. Measures of Central
Tendency:
Mean, Median, Mode

2. Measures of CentralTendency
▪ It is also defined as a single value that is used to describe the “center”
of the data.
▪ Measure of central tendency provides a very convenient way of
describing a set of scores with a single number that describes the
PERFORMANCE of the group.
▪ There are three commonly used measures of central tendency.
▪ These are the following:
▪ MEAN MEDIAN MODE

3. MEAN
▪ It is also referred as the “arithmetic average”
▪ It is the most commonly used measure of the center of data
Computation of Sample Mean
_ X = Σ x = x1 + x2 + x3 + … xn ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ N
̅ ̅ ̅ ̅ N ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅ ̅

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