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help > RE: Contrast help
Sep 13, 2019 12:09 AM | Andrew Zalesky
RE: Contrast help
Hi Lynette,
The contrast [0 0 0 1] whether the the slope of the age-connectivity relationship is steeper in the group coded with 1, whereas [0 0 0 -1] will tester whether the slope is less steep.
In other words it is testing whether the age effect is stronger or weaker in one of the particular groups.
Andrew
Originally posted by lynette looi:
The contrast [0 0 0 1] whether the the slope of the age-connectivity relationship is steeper in the group coded with 1, whereas [0 0 0 -1] will tester whether the slope is less steep.
In other words it is testing whether the age effect is stronger or weaker in one of the particular groups.
Andrew
Originally posted by lynette looi:
Dear Andrew,
Thank you so much for your help. I just have one last question please.
Earlier you mentioned that a T-test of [0 0 0 1] or [0 0 0 -1] can be used to look at the age-group interaction, but I don't quite understand what that will mean when significance is found in either?
Thank you.
Kind regards,
Lynette
Thank you so much for your help. I just have one last question please.
Earlier you mentioned that a T-test of [0 0 0 1] or [0 0 0 -1] can be used to look at the age-group interaction, but I don't quite understand what that will mean when significance is found in either?
Thank you.
Kind regards,
Lynette
Threaded View
| Title | Author | Date |
|---|---|---|
| lynette looi | Sep 9, 2019 | |
| Andrew Zalesky | Sep 10, 2019 | |
| lynette looi | Sep 10, 2019 | |
| Andrew Zalesky | Sep 10, 2019 | |
| lynette looi | Sep 12, 2019 | |
| Andrew Zalesky | Sep 13, 2019 | |