The second type of descriptive statistics is the measure of dispersion, also known as a measure of variability. It is used to describe the variability in a dataset, which can be a sample or population. It is usually used in conjunction with a measure of central tendency, to provide an overall description of a set of data. A measure of dispersion/variability/spread gives us an idea of how well the central tendency represents the data. If we are analyzing the dataset closely, sometimes, the mean/average might not be the best representation of the data because it will vary when there are large variations between the data. In such a case, a measure of dispersion will represent the variability in a dataset much more accurately.
Multiple techniques provide the measures of dispersion in our dataset. Some commonly used methods are standard deviation (or variance...
