The range, which is the simplest and least precise of the measures of variability, is determined by subtracting the lowest score in a set of data from the highest score. It provides a measure that considers the two most extreme scores in a set without accounting for any of the other scores between the extremes. The formula for the range is r = h – l, Where r = range, h = the highest score in the set, and l…
Measures of variability, such as the range, variance, and standard deviation, are types of descriptive statistics that complement the measures of central tendency in describing data sets. These measures of variability reflect how scores differ or are spread or dispersed from one another. A more precise definition is the distance or amount a score in a data set differs from the typical score in the set, usually the mean. The three most common forms of variability are the range, variance,…