HP 35s Scientific Calculator User Manual

Page 254

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16-8

Statistics Programs

Flags Used:

Flag 0 is set if a natural log is required of the X input. Flag 1 is set if a natural log is
required of the Y input.

If flag 1 is set in routine N, then I001 is executed. If flag 1 is clear, G001 is
executed.

Program instructions:

1. Key in the program routines; press

when done.

2. Press

and select the type of curve you wish to fit by pressing:

S

for a straight line;

L

for a logarithmic curve;

E

for an exponential curve; or

P

for a power curve.

3. Key in x–value and press

.

4. Key in y–value and press

.

5. Repeat steps 3 and 4 for each data pair. If you discover that you have made

an error after you have pressed

in step 3 (with the value prompt still

visible), press

again (displaying the value prompt) and press

U

to undo (remove) the last data pair. If you discover that you

made an error after step 4, press

U

. In either case, continue at

step 3.

6. After all data are keyed in, press

R

to see the correlation

coefficient, R.

7. Press

to see the regression coefficient B.

8. Press

to see the regression coefficient M.

9. Press

to see the value prompt for the , –estimation routine.

10. If you wish to estimate based on x, key in x at the value prompt, then

press

to see ().

11. If you wish to estimate based on y, press

until you see the value

prompt, key in y, then press

to see ().

12. For more estimations, go to step 10 or 11.

xˆ

yˆ

yˆ

yˆ

xˆ

xˆ

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