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#26 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 04:59:07

Thanks for everything, i will return from more questions later. Cheers.

#27 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 04:46:59

data={{1,3,8},{2,5,13},{3,8,17}}

When i enter the data in the brackets, it is:

1) data={{B,C,A},{B,C,A},{B,C,A}}

OR

2)data={{B,B,B},{C,C,C},{A,A,A}}

?

#28 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 04:24:33

I have already provided you with 3 values. Could you please tell me how exactly to enter these 3, and then i will add the rest?

#32 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 04:12:27

I could make it on excel, finding a linear connection between A,B and C, but i want to make it a little more complicated. I want to use the multiple correlation coefficient, which would also help me find more accurate values.

#33 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 04:00:00

I remind you that i want  an equation of this format: A=B+k*C , mainly i want to find k, but from inserting 4000 A,B and C values.

#34 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 03:53:48

how am i supposed to enter these into mathematica?

#35 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 03:49:38

508.463    29.8554    33.3831
515.271    29.8752    33.5417
522.866    29.9544    33.6408
A                B              C


The first column is 3 values of A, the second is three values of B and the third is three values of C

#36 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-07 03:42:50

I get this message:

Fit::fitd:  First argument {{5.463`,5.271`},{2,5,13},{3,8,17}} in Fit is not a list or a rectangular array.

Can you imagine what is problem?

I have the excel file and i could send it to you, so you can also try to do it(if you have available time).

#37 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:59:00

ΟΚ i will try and come back if any problems occur

#38 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:53:39

Thank you very much, i will try it now and see if it worked.

Thanks for your time

#39 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:38:05

Can you please tell me how to do it in Mathematica?

#40 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:31:44

Which program would you use to do it for me before?

Is it easy to tell me the method so that i can do it?

We already own mathematica, and the other two are free(R and Sage).

#41 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:28:40

I know how to use Matlab and Mathematica, but only for specific jobs. Can any of those two do the job?

#42 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:27:14

Can you please suggest a program? I am good at learning software, and i would like to learn one powerful program.

If you cannot tell me a program here, please ''private message'' me.

#43 Re: Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:20:49

Hello Mr. BobbyM

the data is huge and i cannot post it. Can you please tell me a methodology, so i can do it in the future again?

Thank you very much!

#44 Help Me ! » Finding the equation from a set of numbers » 2011-07-04 00:18:17

Old_Trafford
Replies: 77

Hello all,

nice to join this forum.

I have a question about maths. I want to create an equation from data values. The equation should be something like A=B+k*C
I have a set of values for A, B and C and i want to connect them in order to find k. Which software should i use for that?

Thank you very much.

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