I also learned about the different measures of dispersion. The two measures are absolute measure and relative measure. Absolute measure is the observation in a data set and relative measure is comparison of the data sets. The range is the difference between the maximum and the minimum of the data set. How large the dispersion is depends on the range. There is also the Interquartile range in short IQR which is the difference between the first and the third quartiles. We can solve for the two quartiles with the formula: L=(J/4)N, and then subtract the two to get the IQR. There is also the variance which is the measure of dispersion, it comes from the average squared of the observations from the mean. There is also the standard deviation which the positive square root of the variance.