I've been thinking about it, and I think info from higher order effects is less likely to be statistically significant and more difficult to interpret. Is that the reason why they are selected?
Yes, the fact that higher order interactions are less likely to accurr (a priori) makes them good candidates to "sacrifice" to blocks. Higher order interactions do occur but have been shown to occur much more seldom than main effects and low order interctions in real life. Best wishes! Erik
Nice video Erik
Are the highest order interactions chosen to be confounded because they provide the least useful information?
I've been thinking about it, and I think info from higher order effects is less likely to be statistically significant and more difficult to interpret. Is that the reason why they are selected?
Yes, the fact that higher order interactions are less likely to accurr (a priori) makes them good candidates to "sacrifice" to blocks. Higher order interactions do occur but have been shown to occur much more seldom than main effects and low order interctions in real life. Best wishes! Erik
@@erikvanhatalo7 thanks