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help > RE: Design Matrix and Contrast
Jul 18, 2018 11:07 PM | Andrew Zalesky
RE: Design Matrix and Contrast
Hi Anita,
you should not run a one-sample test for your design in NBS.
The design you posted previously will account for repeated measures. You should select the "t-test" option, not "one-sample".
I'm not sure what you are running in Excel so I can't really provide feedback on this.
Andrew
Originally posted by asinha:
you should not run a one-sample test for your design in NBS.
The design you posted previously will account for repeated measures. You should select the "t-test" option, not "one-sample".
I'm not sure what you are running in Excel so I can't really provide feedback on this.
Andrew
Originally posted by asinha:
Andrew,
Yes, sorry that was an accidental error on my part. Thank you for the clarification.
I may be misunderstanding this, but when we run paired t-tests in NBS with M # of permutations, is that analogous to a paired two-sample for means test in Excel? In running paired t-tests in NBS between group 1 and group 2 to test for differences between before and after, I didn't get a significant p-value (< 0.05) when assessing all of the significant connections identified.
My aim is to test effects on a subject population from before (group 1) and after (group 2), so I need to account for repeated measures. When running a paired two-sample for means test in Excel with group 1 and group 2 using all of the significant connections identified when running a one-sample t-test on group 1 separately and group 2 separately, I get a p-value of 6.40*10^-5, indicating significant changes.
Could you clarify the discrepancy between the 2 results?
Regards,
Anita
Yes, sorry that was an accidental error on my part. Thank you for the clarification.
I may be misunderstanding this, but when we run paired t-tests in NBS with M # of permutations, is that analogous to a paired two-sample for means test in Excel? In running paired t-tests in NBS between group 1 and group 2 to test for differences between before and after, I didn't get a significant p-value (< 0.05) when assessing all of the significant connections identified.
My aim is to test effects on a subject population from before (group 1) and after (group 2), so I need to account for repeated measures. When running a paired two-sample for means test in Excel with group 1 and group 2 using all of the significant connections identified when running a one-sample t-test on group 1 separately and group 2 separately, I get a p-value of 6.40*10^-5, indicating significant changes.
Could you clarify the discrepancy between the 2 results?
Regards,
Anita
Threaded View
Title | Author | Date |
---|---|---|
asinha | Jul 17, 2018 | |
Andrew Zalesky | Jul 18, 2018 | |
asinha | Jul 18, 2018 | |
Andrew Zalesky | Jul 18, 2018 | |
asinha | Jul 19, 2018 | |
Andrew Zalesky | Jul 21, 2018 | |