PLEASE HELP QUICK
The following distribution consists of 19 values. The mean of the distribution is 34, and the standard deviation is 10.
19, 21, 22, 23, 25, 26, 28, 30, 33, 33, 34, 38, 39, 41, 43, 45, 48, 48, 50
Which of the following actions will increase the standard deviation by the greatest amount?