Top "Anova" questions

aov() error term in R: what's the difference bw Error(id) and Error(id/timevar) specification?

What is the difference between the aov(depvar~timevar+Error(id)) and the aov(depvar~timevar+Error(id/timevar)) formula …

r anova

How to interpret the summary table for Python OLS Statsmodel?

I have a continuous dependent variable y and a independent categorical variable x named control_grid. x contains two variables: …

python statistics statsmodels anova

Two Factor ANOVA Errorbar plot in R

We're teaching a stats class for biology students and trying to use R as the computing and data visualization platform. …

r statistics ggplot2 anova confidence-interval

contrasts in anova

I understand the contrasts from previous posts and I think I am doing the right thing but it is not …

r statistics anova

Post-hoc tests for one-way ANOVA with Welch's correction in R

I have run a one-way ANOVA test with welch's correction using oneway.test() in R, as I have data that …

r anova posthoc

R: In anova.lm(g) : ANOVA F-tests on an essentially perfect fit are unreliable

I am pairing up online guides with an old text to learn R (page 182 - http://cran.r-project.org/doc/…

r warnings anova two-way

TukeyHSD adjusted P value is 0.0000000

I just performed a factorial ANOVA, followed by the TukeyHSD post-test. Some of my adjusted P values from the TukeyHSD …

r anova