help
help > RE: Why do I have positive Z-scores?
Dec 13, 2021 05:12 PM | mc00
RE: Why do I have positive Z-scores?
Dear Roger
Yes it indeed does make sense, thank you so much!
But why does the NiiStat manual say, that the statistical tests are one-tailed?
"NiiStat assumes that any possible relationship between brain data and behavioral scores is monotonic. For example, when analyzing lesion location, we typically make an a-priori one-tailed hypothesis: brain injury leads to impaired behavioral performance."
According to this description I did not expect NiiStat to even look for a positive effect of lesion on behavioral performance...
So in case I have these postive z-socres, before I can rely on them I should adapt p to be < 0.025?
Best,
Magdalena
Yes it indeed does make sense, thank you so much!
But why does the NiiStat manual say, that the statistical tests are one-tailed?
"NiiStat assumes that any possible relationship between brain data and behavioral scores is monotonic. For example, when analyzing lesion location, we typically make an a-priori one-tailed hypothesis: brain injury leads to impaired behavioral performance."
According to this description I did not expect NiiStat to even look for a positive effect of lesion on behavioral performance...
So in case I have these postive z-socres, before I can rely on them I should adapt p to be < 0.025?
Best,
Magdalena
Threaded View
Title | Author | Date |
---|---|---|
mc00 | Dec 10, 2021 | |
Roger Newman-Norlund | Dec 13, 2021 | |
mc00 | Dec 13, 2021 | |