RESEARCH METHODOLOGY

Detailed explanation-1: -Dispersion is the tool of measure for the variation of the items. Dispersion is termed as the state of spreading or getting dispersed. Statistical Dispersion means the extent to which numerical data can alter around an average value.

Detailed explanation-2: -Dispersion means deviation from the central value. According to A.L . Bowley, “Dispersion is the measure of variation of the items”.

Detailed explanation-3: -Measures of dispersion describe the spread of the data. They include the range, interquartile range, standard deviation and variance. The range is given as the smallest and largest observations. This is the simplest measure of variability.

Detailed explanation-4: -Then, I explore the most common measures of variability-the range, interquartile range, variance, and standard deviation. I’ll help you determine which one is best for your data. The two plots below show the difference graphically for distributions with the same mean but more and less dispersion.