# What are the measures of Relative Position?

QuestionsCategory: Educational Research MethodologyWhat are the measures of Relative Position?

## 4 Measures of Dispersion in Research Methodology

The four measures of dispersion are-

### Range:Â

TheÂ differenceÂ between the highest and lowest scoreÂ in a datasetÂ is range.Â It is an easy methodÂ ofÂ calculation.Â It doesÂ not use allÂ the observationsÂ in a data distribution.Â So this is usefulÂ in finding onlyÂ minimum and maximum values of a dataset.

### Quartile Deviation:

The difference between the 25thÂ and 75thÂ percentileÂ or the third quartile andÂ the first quartile is Quartile deviation.Â It is the Semi-interquartile range of aÂ dataset.

### MeanÂ Deviation orÂ AverageÂ Deviation:

The average or mean of the deviationsÂ of the value from central tendencyÂ is called mean deviation.Â The central tendency canÂ eitherÂ beÂ measurement of mean, median or mode.Â AverageÂ deviation or mean deviationÂ removesÂ the deficienciesÂ ofÂ Range and Quartile methods.Â  Â

### Standard Deviation:

Standard deviation isÂ the mostÂ common andÂ frequently used measureÂ of dispersion.Â It is the square root of the sumÂ averageÂ of the squared deviationÂ measured from the mean. Read more >>>