Question: how to calculate standard deviation in ti 84 plus?
Answer: Newer TI 84's: Press STAT, choose CALC and press ENTER. You will see a display like the following. Make sure L1 is next to List: and L2 is next to FreqList:, then highlight Calculate and press Enter. The mean is next to , the sample standard deviation is next to Sx, and the population standard deviation is next to sx.