Paired variable Menu Item

Select this

When you want to do this:

menu item:

Display the Reg sub menu of commands

for regression calculations

  For details see  Commands when Lin 

ear  Regression Calculation (A+BX) Is

7Reg

Selected  on page E 117 and  Com 

mands when Quadratic Regression

Calculation (_+CX

2

) Is Selected  on

page E 121.

A Single variable (1 VAR) Statistical

Calculation Commands

The following are the commands that appear on the sub 

menus that appear when you select 4(Sum), 5(Var)

or 6(MinMax) on the STAT menu while a single variable

statistical calculation type is selected.

Calculation formula used for each command

o

 x

= n

x

n

=

  (x   o)

2

n

x

n

  1

=

  (x   o)

2

n

   1

Sum Sub menu (17(S MENU)4(Sum))

Select this

When you want to obtain this:

menu item:

1

 x

2

Sum of squares of the sample data

2

 x

Sum of the sample data

Var Sub menu (17(S MENU)5(Var))

Select this

When you want to obtain this:

menu item:

1

n

Number of samples

2

o

Mean of the sample data

3

x n

Population standard deviation

4

x n

 1

Sample standard deviation

E 113