Classifying Data

Measures of Central Tendency and Dispersion

Another set of descriptive statistics that can be used to analyze data are the measures of dispersion or measures of variation. If the measures of central tendency tend to represent an overall numerical value to describe a set of numerical data, the measures of dispersion deal with the extent of variations of scores in a set of numerical data. How much is the spread of other scores to the computed mean? The measures of dispersion consist of the range, the frequency distribution, variance, and the standard deviation.