Regression analysis in R: backward selection

Рет қаралды 4,269

10 ай бұрын

Selecting variables for a linear model is dicey. Let's get started! If this vid helps you, please help me a tiny bit by mashing that 'like' button. For more #rstats joy, crush that 'subscribe' button!

Пікірлер: 17

@EquitableEquations 9 ай бұрын

You can find materials supporting this vid (and others) at github.com/equitable-equations/youtube.

@louiseweschler1746 9 ай бұрын

Got it! Thank you very much. Now I can work through another great vid in your Regression series of vids (*all* your vids are excellent!).

9 ай бұрын

Really interesting topic. Great video, really well explained!

@evanspencer3819 4 ай бұрын

Thanks for the great video. Really well done.

@EquitableEquations 4 ай бұрын

Thanks man!

@Ammarsays 9 ай бұрын

Great video. Please also make a video on selection in logistic regression. And also how we can automate the removal of variables based on a criteria.

@DrGKumar-me7bx 9 ай бұрын

Thank you sir.

@umagenetics3975 3 ай бұрын

plz make video abour forward stepwise

@brazilfootball 9 ай бұрын

I heard you mention this wouldn't be devoted to inference, but wondered if you could help me understand the pitfalls of stepwise elimination as its summarized in this sentence I found: "If you remove the insignificant terms and then refit, the inference results (p-values) would not include the "effect" of the previous selection". I can't wrap my head around what this means practically and what the implications might be. Any corrections or thoughts? Thank you, I really enjoy your videos!

@EquitableEquations 9 ай бұрын

Hi! Yes, that's a reasonable way of describing it. As a result of the process used to get them, the p-values of the remaining terms will be low after variable selection. You shouldn't use their lowness to draw conclusions about statistical significance.

@brazilfootball 9 ай бұрын

Oh, ok! I don’t know why that was so hard for me to get. Thanks again! 😅

@DrGKumar-me7bx 9 ай бұрын

My humble request you to make videos regarding ggplot2 with tools geom_ point, geom_bar, geom_line, pie chart, geom_area and others geom relates charts with one single dataset with every charts all the syntax. It will be useful as a beginner. Thank you so much for your great effort. ❤❤❤❤

@EquitableEquations 9 ай бұрын

Hi! I've got vids on most of those geoms, including point (kzfaq.info/get/bejne/Y9Flo9mp3t_NaKM.html) and bar (kzfaq.info/get/bejne/ftx_hKmC36_LZZc.html). You might also be interested in my ggplot overview (kzfaq.info/get/bejne/g8l8bLB-3NOtio0.html), which covers a lot of geoms using only a few data sets.