HP -225 Owner's Manual page 129

Scientific calculator
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Make sure P=¢(X-%)x(Y-%>+n is the current equation. Then:
(EvaL]
6 [INPUT] 3 [INPUT]
(sTo] C
(EVAL)
7 (INPUT] 4 (INPUT]
(sTo)(#] C
(EVAL]
8 [INPUT] [INPUT]
(sTo](z] C
(EVAL]
9 [INPUT]) 5 [INPUT]
(sTo](z] C
(EVAL]
(INPUT] 6 [INPUT]
(sTo](z] C
(RCL] C
P=8.5040
C=8.50408
P=8.80640
P=8.06408
P=-00160
P=0.1440
P=8.3840
C=1.6800
Evaluates the equation.
Stores value into C.
Evaluates the equation.
Adds 0.064 to contents
of C.
Calculates P, accumu-
lates C for 3rd point.
Calculates P, accumu-
lates C for 4th point.
Calculates and accu-
mulates C for 5th
point.
Recalls C, the
covariance.
8: Additional Examples
121

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