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jamovi / walrus

Walrus - Robust Statistical Methods
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𝑡-test bootstrapping #10

Open N1X3L opened 1 year ago

N1X3L commented 1 year ago

Module development request: could bootstrapping be added to robust 𝑡-tests for 𝑀-estimators please? Thank you in advance for the consideration!

jonathon-love commented 1 year ago

ooh, let's ask @MAgojam

MAgojam commented 1 year ago

Hey Jth, Walrus is under maintenance to add robust ANCOVA and MANCOVA, I will also add @N1X3L's request to the list.

MAgojam commented 1 year ago

Hey @N1X3L, are you suggesting an option for bootstrap to play Robust Paired Samples T-Test or is it something else? TA

N1X3L commented 1 year ago

Hi @MAgojam Thank you for asking! I'm suggesting that bootstrapping also be made available for 𝑀-estimation when conducting robust 𝑡-tests on independent samples, much like how it is available for robust ANOVAs. Walrus

MAgojam commented 1 year ago

Hey @N1X3L, thanks for replying with the attached screenshot, because it showed me that there is a possible bug to fix. There is no message reminding that the group variable (Species) has three levels, but it accepts it by deleting one arbitrarily. Since you don't have a Filter active to exclude a level, otherwise F in robust ANOVA should be equal to t^2 and it isn't.