Enter your data into Excel
Click in an empty cell. Select Formulas-->More Functions--Statistical. The two functions are AVERAGE and MEDIAN. AVERAGE will give you the arithmetic mean
Click an empty cell. Type =AVERAGE(1st cell: last cell)
=MEDIAN(1st cell: last cell)
There are two ways to calculate Standard Deviation in Excel. NOTE: There are multiple formulas for calculating Standard Deviation (Population vs Sample). Be sure to choose the correct type.
1) Type in the formula: =STDEV(1st number:last number)
2) Use the Function section. Find STDEV in the alphabetized list.