Casio FX-820MS Manuale Utente

E-28

Regression Coefficient C = 

10 

A X r r 3 =

n

 when 

 is 16 = 

16 

A X r r r 3 =

m

1

 when 

 is 20 = 

20 

A X r r r 1 =

m

2

 when 

 is 20 = 

20 

A X r r r 2 =

•

S

 

S

 inputs the same data twice.

• You can also input multiple entries of the same data

using 

A

 

G

. To input the data “20 and 30” five times,

for example, press 20 

P

 30 

A

 

G

 5 

S

.

• The above results can be obtained in any order, and not

necessarily that shown above.

• Precautions when editing data input for standard devia-

tion also apply for regression calculations.

k When you have a problem......

If calculation results are not what you expect or if an error
occurs, perform the following steps.

1. Press 

A

 

B

 

2

(Mode) 

=

 to initialize all modes and

settings.

2. Check the formula you are working with to confirm it is

correct.

3. Enter the correct mode and try performing  the calcula-

tion again.

If the above steps do not correct the problem, press the

5

 key. The calculator performs a self-check operation and

deletes all data stored in memory if any abnormality is
detected. Make sure you always keep written copies of all
important data.

k Error Messages

The calculator is locked up while an error message is on
the display. Press 

t

 to clear the error, or press 

e

 or 

r

to display the calculation and correct the problem. See
“Error Locator” for details.