One line PredY ? Statistics 2Var

04212021, 05:21 PM
Post: #1




One line PredY ? Statistics 2Var
Hello.
No problem finding the value of y using the method below: C1:={750,850} > x1 and x2 C2:={55,65} > y1 and y2 Predict y3 knowing x3=813.7 : PredY(813.7) > 61.37 (linear regression) It's also ok when I use the data columns in Statistics 2Var App. But in the documentation we can read: PredY(mode, x, parameters) mode = 1 for linear regression (OK ?) x = 813.7 (OK ?) parameters ?? I try {{750,850},{55,65}} or the slope and Yintercept but it does not work. Do you have an idea ? 

04212021, 10:44 PM
Post: #2




RE: One line PredY ? Statistics 2Var
If you are not in the spreadsheet app type it like this:
Spreadsheet.PredY(1,X,{slope,intercept}) road 

04222021, 04:36 AM
Post: #3




RE: One line PredY ? Statistics 2Var
Just to clarify, there are two different PredY functions.
Statistics_2Var.PredY() which appears to only take 1 X parameter and uses the fit type selected in Symb screen. Spreadsheet.PredY() which takes the 3 parameters that you were trying to use. 

04222021, 07:00 AM
Post: #4




RE: One line PredY ? Statistics 2Var
I understand my mistake, there were several functions PredY...
Thanks 

04222021, 12:21 PM
Post: #5




RE: One line PredY ? Statistics 2Var
(04222021 04:36 AM)Wes Loewer Wrote: Just to clarify, there are two different PredY functions. I think this is one of those areas where the interactive help cards could be improved by including the Statistics and Spreadsheet prepend details. A very simple change but the clarity will be greatly improved. 

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