Hey thanks for the vids they're a lifesaver, im taking econometrics this semester and as someone with not much experience in stats or programming this helps a lot
you make good videos, i'd just pad the ends of your video with a few seconds just to let us absorb the final statement and anything on the screen that just changed, youtube will prompt an ad or jump to another video before I can pause or see what just changed
Would there be any difference in the code if there is a positive relationship between one variable and a negative relationship with the second variable? I'm looking at athlete exertion, sleep, and fatigue. Thanks!
I know there are multiple ways of writing the multiple regression line but I am still a bit confused. Since you are using the approximation sign then is the y not y hat? Also does not each x_i have its own error that is epsilon_i. Therefore, in your expression should the epsilon subscript not be k?
Hi, I really like the points you mention in your lectures, very helpful! a couple of questions 1. looking at ggpairs graph you mentioned y values doesn't seem to be dependent on the value of x1 or x2 , how did you come to this conclusion? 2.have you also covered nonlinear regression in this channel? Thank you!
HI! The main points of the ggpairs plots are (a) the relationships y~x1 and y~x2 are linear and (b) the *spread* of the y-values doesn't seem to depend on the x-values. In the latter case, I'm seeing that the y-values in each of the bottom two plots are roughly equally dispersed for each value of x.
I'm building a series of vids on multiple regression right now. I expect to cover polynomial models in the next few weeks and generalized linear models after the new year.
You can find material supporting this vid (and others) at github.com/equitable-equations/youtube.
It was one of the best videos on youtube. That last interpretation is perfect.
Thank you!
Thank you very much for your videos. I've watched the ones regarding the multiple linear regressions and they've solved lots of doubts that I had!
Thanks for the info on Cook's D. It's probably useful when sample sizes are relatively small and outliers could be disproportionately influential.
I have my stats exam tomorrow and plan to learn R fundamentally by watching your videos. You do a great job.
Hey thanks for the vids they're a lifesaver, im taking econometrics this semester and as someone with not much experience in stats or programming this helps a lot
I wish you can make statistics using R series , I found your explanation straightforward and easy to understand , thank you so much
Here's my intro stats playlist. It makes heavy use of R
ruclips.net/p/PLKBUk9FL4nBalLCSWT6zQyw19EmIVInT6
you make good videos, i'd just pad the ends of your video with a few seconds just to let us absorb the final statement and anything on the screen that just changed, youtube will prompt an ad or jump to another video before I can pause or see what just changed
at 9:27 shouldn't the null hypothesis be that there is no MLR?
Yes you're correct. I misspoke at that point.
Thank you!
I guess we should correct a little bit this code (rows 18-19)
new_data
You’re right! It’s fixed on GitHub.
Would there be any difference in the code if there is a positive relationship between one variable and a negative relationship with the second variable? I'm looking at athlete exertion, sleep, and fatigue. Thanks!
Hi! There's no difference at all if one relationship is negative and the other positive.
I know there are multiple ways of writing the multiple regression line but I am still a bit confused. Since you are using the approximation sign then is the y not y hat? Also does not each x_i have its own error that is epsilon_i. Therefore, in your expression should the epsilon subscript not be k?
helpful videos of all!
Thanks you so much for explaining
Hi,
I really like the points you mention in your lectures, very helpful!
a couple of questions
1. looking at ggpairs graph you mentioned y values doesn't seem to be dependent on the value of x1 or x2 , how did you come to this conclusion?
2.have you also covered nonlinear regression in this channel?
Thank you!
HI! The main points of the ggpairs plots are (a) the relationships y~x1 and y~x2 are linear and (b) the *spread* of the y-values doesn't seem to depend on the x-values. In the latter case, I'm seeing that the y-values in each of the bottom two plots are roughly equally dispersed for each value of x.
I'm building a series of vids on multiple regression right now. I expect to cover polynomial models in the next few weeks and generalized linear models after the new year.
@@EquitableEquations 1.Thank you , now understood what you were talking about!
2. great! will subscribe :)
Is there a site where you have all your loaded video lectures in R?
Thanks for asking! You can see the whole collection here:
ruclips.net/p/PLKBUk9FL4nBYpUKszG4edyAiM9aeTT1yv
Multiple linear regression in R