[12C] Linear Regression
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01-19-2019, 06:01 AM
(This post was last modified: 01-19-2019 06:10 AM by Gamo.)
Post: #1
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[12C] Linear Regression
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 Remark: For HP-12C Platinum Simply remove [ENTER] [x] to [X^2] And remove [STO] 0 [RCL] 0 and [X<>Y] Gamo |
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01-19-2019, 01:46 PM
Post: #2
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RE: [12C] Linear Regression
Gamo,
The HP 12c has linear regression built in. The slope has to be computed by calculating the difference in the predicted Y-values for two X-values. This is covered in the HP-12c manual and in the learning module. HP-12c learning module |
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01-19-2019, 01:57 PM
(This post was last modified: 01-19-2019 02:09 PM by Dieter.)
Post: #3
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RE: [12C] Linear Regression
(01-19-2019 01:46 PM)Gene Wrote: The HP 12c has linear regression built in. The slope has to be computed by calculating the difference in the predicted Y-values for two X-values. This has already been discussed here, cf. http://www.hpmuseum.org/forum/thread-618...l#pid55342 0 g [y^, r] => intercept 1 g [y^, r] => slope + intercept So this... Code: 1 ...returns the y-intercept in X, the slope in Y and the correlation coefficient in Z and T. Also post #8 in that thread has essentially the same program as Gamo's, just without the double calculation of the determinant. Note: Gamo, I have sent a PM earlier today as you originally posted this to the Articles forum where no replies are possible. Dieter |
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01-20-2019, 12:19 AM
(This post was last modified: 01-20-2019 12:19 AM by Gamo.)
Post: #4
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RE: [12C] Linear Regression
Thanks to Dieter and Gene
The 12C learning module explain in detail and same as Dieter mention. No wonder that 12C came with both X^,r and Y^,r Gamo |
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