How do you calculate geomatric mean on casio fx-991ms?

To calculate the geometric mean on a Casio fx-991MS, first input your data values. Press the "MODE" button until you select "STAT" mode. Enter your data values one by one, then press the "AC" button to finish. Finally, access the results by pressing the "SHIFT" button followed by "1" (STAT) and then "4" to display the geometric mean.