Casio fx-50F o = Σnxi, xσn xσn–1, Σx = Σxi, minX, maxX, A Deleting All Sample Data, A SD Mode Statistical Command Reference, Σx2 = Σxi2, Σ(xi – o)2

A Deleting All Sample Data

Perform the following key operation to delete all sample data. 19(CLR)1(Stat)E

If you do not want to delete all sample data, press A in place of E in the above operation.

A Statistical Calculations Using Input Sample Data

To perform a statistical calculation, input the applicable command and then press E. To determine the mean (o) value of the current input sample data, for example, perform the operation shown below.

12(S-VAR)	x	xσn xσn–1
	1	2	3

1E x2533333333

* This is one example of possible calculation results.

A SD Mode Statistical Command Reference

ƙx211(S-SUM)1

Obtains the sum of squares of the sample data.

Σx2 = Σxi2

ƙx11(S-SUM)2

Obtains the sum of the sample data.

Σx = Σxi

n11(S-SUM)3

Obtains the number of samples.

n= (number of x-data items)

x¯12(S-VAR)1

Obtains the mean.

o = Σnxi

xσn12(S-VAR)2

Obtains the population standard deviation.

xσn =	Σ(xi – o)2
	n

xσn–112(S-VAR)3

Obtains the sample standard deviation.

xσn–1 =	Σ(xi – o)2
	n – 1

minX 12(S-VAR)e1

Determines the minimum value of the samples.

maxX 12(S-VAR)e2

Determines the maximum value of the samples.

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