The process of assigning numerals or other symbols to answers so that responses can be put into a limited number of categories or classes.

The process of summarizing raw data and displaying the same in compact form (i.e., in the form of statistical tables) for further analysis.

The process of arranging data in groups or classes on the basis of common characteristics.

Studies the joint variation of two or more variables for determining the amount of correlation between two or more variables.

Concerned with the study of how one or more variables affect changes in another variable.

All statistical methods which simultaneously analyze more than two variables on a sample of observations.

Also referred as statistical averages tell us the point about which items have a tendency to cluster. The 3 most common statistical averages are (arithmetic) mean, median and mode.

Gives details about the scatter or spread of the data.

Shows the manner in which the items are clustered around the average.