Robert B.

asked • 01/08/18

Correlation

Hi there, 
 
I have a question about the correlation between 2 arrays of measurement values. I've named the 2 arrays X and Y. When i scale the graph of both arrays, the shape of both lines are identical. By Pearson i found that the correlation is 0,9966 (not sure of this value is accurate). 
 
In real life i only have 1 of both arrays, i know that (when scaled) both graphic lines have the same shape. Can i somehow make up a formula to find the other array of values? 
 
I have already tried so many ways, but i can't figure it out.
 
The values for X are: {3146,6 4121,22 4606,31 4903,2 5023,6 5013,16 4904,86 4568,46}. The values for Y are: {1048 1170 1227 1257 1271 1273 1264 1236}. 
 
Can someone give me a push in the right direction?
 
Thanks in advance.
 
Best regards, Robert

Bobosharif S.

Hi Robert,
You have two data sets and you calculated correlation coefficient=0.9966, which is accurate. 
You could do it because you have both X and Y (observations). 
It is clear that if you do not have observations (values) either for X or Y  you cannot calculate correlation coefficient.
 
As far as I know, there is no way to get one set of observations from the other one. Maybe you I did not understand your question correctly?!
 
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01/08/18

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