kDetermining Sample Standard Deviation and Sample Variance from ListData

You can use functions to determine sample standard deviation and sample variance for specified list data. This calculation is performed in the Run-Matrixmode. You can perform calculations using data you saved to a list (List 1 to List 26) with the Statistics mode List Editor or list data you input directly on the Run-Matrixmode screen.

Syntax

StdDev(List n [,List m])

 

 

 

 

 

 

Variance(List n [,List m])

 

 

 

 

 

 

List n........Sample data

 

 

 

 

 

 

List m.......Frequency data

 

 

 

 

Example

To store the x-data below in List 1, the frequency values in List 2, and

 

determine the sample standard deviation and sample variance

 

 

 

 

 

 

 

 

 

x

 

60

70

80

90

 

 

 

 

 

 

 

 

 

 

Frequency

 

3

5

4

1

 

 

 

 

 

 

 

 

 

1. From the Main Menu, enter the Statistics mode.

2. Use the List Editor to store the above data.

3. From the Main Menu, enter the Run-Matrixmode.

4. Press the keys as follows.

K5(STAT)4(StdDev)J

1(LIST)1(List)b,1(List)c)w

J5(STAT)5(Var)J

1(LIST)1(List)b,1(List)c)w

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