4. Briefly explain the following terms

a. Measures of dispersion

Measures of dispersion is the extent to which values in a distribution differ from the average of the distribution. It gives us an idea about the extent to which individual items vary from one another and from the central value.

For example: It is to take the highest and lowest values in a set of numbers and have a look at how they differ from each other. It will explain that how spread out the values are.

b. Correlation

Correlation is a statistical technique that can show whether and how strongly pairs of variables are relate

For example, height and weight are related; taller people tend to be heavier than shorter people.