Population N Managers 21 6052 423 60. It shows how much variation there is from the average mean. Standard deviation SD is a widely used measurement of variability used in statistics.
Calculate mean mode and median to find and compare center values for data sets.
Thus if somebody says that 95 of the states population is aged between 4 and 84 and asks you to find the mean. Calculate sum of all the values and divide it with the total number of values in the data set. This formula says that take each element from dataset population and subtract from mean of data setLater sum. The larger the population sample number of scores the closer mean and median become.