statistical significance
Added by Grace Redmond over 11 years ago
Hi,
I'm trying to calculate the statistical significance of a change in temperature.
I'm using the student's t-test and CDO commands to calculate the t statistic and the degrees of freedom.
However, I haven't found any CDO operator which would allow me to use these to calculate the statistical significance of change (i.e. the probability that the change between sample1 and sample 2 is due to a change in signal and not random variability.)
Is there a function to do this? Or are there any operators I could combine to calculate this?
Thanks
Grace
Replies (4)
RE: statistical significance - Added by Jaison-Thomas Ambadan over 11 years ago
Hi,
Are you using the "studentt" operator? (It is an experimental, undocumented operator for student t-test I guess)
Cheers,
J.
RE: statistical significance - Added by Grace Redmond over 11 years ago
I haven't tried using that (as I didn't know it existed)
Would you know where I could find the required input field/s?
A quick 'cdo studentt' suggests it wants one input and one output field.
Thanks very much
Grace
RE: statistical significance - Added by David Gobbett almost 10 years ago
Hi all,
I would also like to test the significance of a trend. Can the studentt function be used for this? If so, can someone please provides some guidance on input and output parameters?
Regards
David
RE: statistical significance - Added by Uwe Schulzweida almost 10 years ago
The undocumented CDO operator studentt simple computes the student-t distribution of a horizontal field. The input parameter is the degree of freedom.