Program
Instructions:
1. Key in the program routines; press {c\ when done.
2. Press
IXEQI
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 I
R/S
I.
4.
Key in y-value
and
press IR/s I.
5. Repeat steps 3 and 4 for each data pair. If you discover that you
have made an error after you have pressed I
r/s
Iin step 3 (with
the
Y?va/t/e
prompt still visible), press I
r/s
Iagain (displaying the
X?va/ue
prompt)
and
press Ixeq IU to
undo
(remove) the last data
pair. If you discover that you made an error after step 4, press
IXEQI
U.
In either case continue at step 3.
6. After all data are keyed in, press Ixeq IR to see the correlation
coefficient, R.
7.
Press IR/SI to see the regression coefficient B.
8. Press IR/SIto see the regression coefficient M.
9.
Press IR/SI to see the X?va/ue prompt for the x-, y-estimation
routine.
10.
If you wish to estimate y based on x, key in x at the x?value
prompt,
then
press IR/s Ito see y (Y?).
11.
If you wish to estimate x based on y, press IR/SIuntil you see the
Y?va/t/e
prompt, key in y, then press IR/SI to see x (X?).
12.
For more estimations, go to steps 10 or 11.
13.
For a
new
case, go to step 2.
13:
Statistics
Programs
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