[12C] Linear Regression

[Gamo]

HP-10C 11C and 15C came with [L.R.] (Linear Regression) function.

HP-12C don't have this function this program will do the L.R. function based
on the formula shown on the HP-11C manual on page 63

To use this L.R. function program, use the [Σ+] key to accumulate the statistic of
a series of two or more data pair. Then execute [R/S]

Procedure:
[R/S] display Y-intercept on stack register X
[X<>Y] display Slope on stack register Y

------------------------------------------------------------
Program: L.R. for HP-12C

Quote:RCL 1
RCL 6
x
RCL 2
RCL 4
x
-
RCL 1
RCL 3
x
RCL 2
ENTER
x
-
÷
STO 0
--------------------------
RCL 4
RCL 3
x
RCL 2
RCL 6
x
-
RCL 1
RCL 3
x
RCL 2
ENTER
x
-
÷
RCL 0
X<>Y

Remark:

For HP-12C Platinum
Simply remove [ENTER] [x] to [X^2]
And remove [STO] 0 [RCL] 0 and [X<>Y]

Gamo