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Casio fx-82ES Clear previous data: Press (switching mode or changing statistical views clears data) Set up for Frequencies Press Change to Statistics Mode (3:STAT) (1:ON) Press (you will see STAT at the top of the screen and an X column and a FREQ column.) Entering Data (single list of data point Entering Data (from a frequency with each with frequency 1) distribution) Press first data number. Press first data number. Press . You will see the number in the X column and a 1 in the FREQ column. Press . You will see the number in the X column and a 1 in the FREQ column. Press second data number. Press second data number. Press Press . Continue until you have entered all the data. . Continue until you have entered all the data. Press and the press until you are in the first row of the FREQ column Press first frequency number. Press . You will see the number in the X column and the input frequency in the FREQ column. Press first frequency number. Press . Continue until you have entered all the frequencies. Calculating mean and standard deviation Press to get out of the statistics calculation screen. Press (STAT) to see the number of total data points. Press (STAT) to see the mean x . Press (STAT) to see the standard deviation xn 1 . SETUP SHIFT MODE arrow keys STAT =