Incredible videos man, I can't thank you enough for doing this. I have a midterm tomorrow, but I've been going through all your videos and feel entirely prepared.
To test the null hypothesis that the population means of several groups are all equal, we often use one-way ANOVA. If this gives strong evidence of a difference in population means, then we may investigate all the pairwise combinations. That's the gist, but there's much more to it than I can do justice in a short response. I have several videos on one-way ANOVA. Cheers.
You're finding the 97.5th percentile of the standard normal distribution, but we need to find it for the t distribution with the appropriate degrees of freedom.
I wouldn't call that part hard, as it's just jamming numbers through the formula. I don't typically make my students carry out that calculation, as we typically rely on software, so I don't work through the formula here.
It's as complicated as it needs to be, and understandable. I don't expect everybody to be able to understand everything on first viewing, and some concepts might require some thinking and rewatching.
Incredible videos man, I can't thank you enough for doing this. I have a midterm tomorrow, but I've been going through all your videos and feel entirely prepared.
You are very welcome Stephen. I hope you learned a lot, and I hope your exam goes very well!
You saved my day. Appreciate it 😊
Thanks for the insightful videos.
What does mean when SEw = SEp?
Does it mean that it is likely Sigma1 = Sigma2 ?
To test the null hypothesis that the population means of several groups are all equal, we often use one-way ANOVA. If this gives strong evidence of a difference in population means, then we may investigate all the pairwise combinations. That's the gist, but there's much more to it than I can do justice in a short response. I have several videos on one-way ANOVA. Cheers.
Hi- amazing video, thanks for sharing. Could you please explain how I found the P value for two-tailed without software?
You can also find d value instead of p it will be more helpful? To know the treatment effect
I love this! thank you so much!!!
What if the means of more than two groups are compared? Do we just check every combination?
im doomed
you are the man!!
さすがmesi Thanks!
Sooooo, long story short: the only difference between t-test and welch t-test is the formula for the degrees of freedom, right?
Sooooo, long story short: the only difference between London and Paris is that one is in England and the other in France, right?
Why is .025 2.228? If you use invnorm it is 1.959 what am I doing wrong?
You're finding the 97.5th percentile of the standard normal distribution, but we need to find it for the t distribution with the appropriate degrees of freedom.
Why don't you actually show how to find the degrees of freedom. That is the hardest one.
I wouldn't call that part hard, as it's just jamming numbers through the formula. I don't typically make my students carry out that calculation, as we typically rely on software, so I don't work through the formula here.
too complicated to understand ..
It's as complicated as it needs to be, and understandable. I don't expect everybody to be able to understand everything on first viewing, and some concepts might require some thinking and rewatching.