GreenHearts

At the end of the module, the students will be able to know the following:

The computation and interpretation for measures of Central Tendency

Computation and interpreattaions for measures of Variability

MEASURES OF CENTRAL TENDENCY

Mean- the most common measure of center and is alsoknown as the “ arithmetic average ”.

MEASURES OF CENTRAL TENDENCY

Median – it is the

point that divides the

scores in a

distribution in two

equal parts

Mode – refers to the

scores that occurred

most in the

distribution.

Measures of VariabilityThis is used to describe the spread out of the

scores in a distribution that is above or below the

measures of central tendency.

There are three commonly measures of variability:

The range

The quartile deviation

And the standard deviation

Three commonly measures of variability:

Range – the difference between the highest score and

lowest score in the data set.

Quartile Deviation – The half of the difference between

the third quartile and the first quartile.

Standard Deviation – the most important and useful

measure of variation, it is the square root of the variance.

Quartile Deviation

Standard Deviation