•Press can delete the data during the display of that data value (x) after or key is pressed; and the sequence of the data which following the deleted data will be shifted up automatically.

•Pressor key to exit the data value and frequency display, then you can perform other calculation operations.

•Input data are stored in calculation memory. As the memory full, [Data Full] will be displayed and you cannot input or perform any calculation.

•After changing into another mode or regression type

(Lin, Log, Exp, Pwr, Inv, Quad), input data will be cleared.

nAfter finishing data entries, you can recall or calculate the statistical values.

Standard Deviation

nPress to enter SD mode.

nBefore starting, be sure to clear the statistical

memory by pressing .

nYou can recall the following statistical value after input all data.

Value (Symbol)

Summation of x (x )

Sum of Square (x2 ) Number of data sample ( n ) Population Standard Deviation of x ( xn ) Sample Standard Deviation of x ( xn-1)

Mean of x ( x )

Maximum value of x ( maxX ) Minimum value of x ( minX ) Median value ( med )

(Example #18)

17