Descriptive statistics of range

In descriptive statistics, range is the size of the smallest interval which contains all the data and provides an indication of statistical dispersion. Since it only depends on two of the observations, it is most useful in representing the dispersion of small data sets.

Along with measures of central tendency, measures of variability give you descriptive statistics for summarizing your data set. The range is calculated by subtracting the lowest value from the highest value. While a large range means high variability, a small range means low variability in a distribution.The range is a measure of variability because it indicates the size of the interval over which the data points are distributed. A smaller range indicates less variability (less dispersion) among the data, whereas a larger range indicates the opposite.Measures of variability give you a sense of how spread out the response values are. The range, standard deviation and variance each reflect different aspects of spread. Range The range gives you an idea of how far apart the most extreme response scores are. To find the range, simply subtract the lowest value from the highest value.