Standard deviation is a measure of how spread out a set of data is. It is calculated by finding the square root of the variance, which is the average of the squared differences between each data point and the mean. Standard deviation can be used to compare the variability of different data sets or to determine whether a particular data point is significantly different from the rest of the data.
There are a few different ways to find the standard deviation of a data set. One way is to use a graphing calculator. To do this, enter the data into the calculator and then use the “STAT” menu to select the “CALC” option. Then, choose the “1-Var Stats” option and press enter. The calculator will then display the mean, standard deviation, and other statistics for the data set.