HP 48G Linear Regression Best Fit Line
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12-22-2021, 02:09 AM
(This post was last modified: 12-22-2021 02:11 AM by MNH.)
Post: #42
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RE: HP 48G Linear Regression Best Fit Line
After you do the "Fit data" in the statistics menu, there are 3 items on the stack--just drop them.
Done Execute LR; what do you see on the stack? It should be error free--drop anything on the stack. Intercept: 672.349 Slope: 0.008 Execute ORTH (press the softkey for ORTH); what do you see on the stack? it should be error free--clear the stack. 0.008 672.345 You can run OFIT manually a step at a time. Recall X to the stack by pressing the softkey for the X variable; what do you see? x matrix Press the softkey for ORTH; what do you see? x matrix 0.008 672.345 Type "DUP" and press enter; what do you see? x matrix 0.008 672.345 672.345 Type "1." and press enter; what do you see? x matrix 0.008 672.345 672.345 1.000 Type "GET" and press enter; what do you see? GET Error: Bad Argument Type 0.008 672.345 672.345 1.000 Apparently the error will occur when we try to execute "GET", so the contents of the stack here, and just before the "GET", should tell us what the problem is. |
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