Statistics 101: ANOVA Post Hoc Test (Fisher's LSD)

In this Statistics 101 video, we explore the basics of post hoc analysis in ANOVA. While this video uses Fisher's LSD as an example, there are others such as Tukey HSD, Scheffe's Method, and Bonferroni that have similar aims. Post hoc analysis can be controversial but this is simply an introduction to the topic using an example problem. Enjoy!
My playlist table of contents, Video Companion Guide PDF documents, and file downloads can be found on my website: www.bcfoltz.com
#statistics #regression #machinelearning #datascience

Пікірлер: 38

  • @michaelgeorgemcdonald5927
    @michaelgeorgemcdonald59273 жыл бұрын

    Can't wait to use ANOVA and Test on some data I'm tracking. Thanks for the videos. They're great! Very well presented and concise. Well done to you and thanks again!

  • @scottsara123
    @scottsara1234 жыл бұрын

    I love your video, whenever i need clarity about statistical inference i follow you. Thanks.

  • @eldrigeampong8573
    @eldrigeampong85734 жыл бұрын

    You are the best Brandon. Your videos are excellent and you make statistics very easy to grasp. Keep it up

  • @JiancarloUlloa
    @JiancarloUlloa4 жыл бұрын

    Thank you for this video, and to present the information so clearly!!

  • @VenkataSubramaniRamachandra
    @VenkataSubramaniRamachandra4 жыл бұрын

    As usual a very neat and clear presentation. Thanks a lot.

  • @juliesampson162
    @juliesampson1624 жыл бұрын

    thanks for the aside about the coasters. the wooden ones have an extra "scare" factor. giant dipper in santa cruz is one of those, but the King is over a mile?!? I love it. Thanks for these videos. you rock.

  • @teresarogers2353
    @teresarogers23534 жыл бұрын

    Thanks! You make this easier to understand

  • @Muuip
    @Muuip4 жыл бұрын

    Great presentation, very helpful. Much appreciated.

  • @aiikaiik
    @aiikaiik3 жыл бұрын

    Incredibly Informative!!! Thanks Brandon, I subscribed.

  • @faraesthetics7161
    @faraesthetics71613 жыл бұрын

    I love your video. Really help me in my test! Thank you

  • @Mina-xo6ii
    @Mina-xo6ii4 жыл бұрын

    I love your videos, they helped me alott! will you please make one about PLS (partial least squares regression)

  • @ChalaMosisa1bestsong
    @ChalaMosisa1bestsong4 жыл бұрын

    your videos helps a lot

  • @luciehronova1584
    @luciehronova15844 жыл бұрын

    Thank you very much for your videos! :)

  • @ahmadabul4883
    @ahmadabul48834 жыл бұрын

    I highly recommend watching this tutorial

  • @sylviaemejuru1956
    @sylviaemejuru19563 жыл бұрын

    Thank you very much. You are the best!

  • @michaelodonnell7844
    @michaelodonnell78444 жыл бұрын

    A brilliant video like all your other videos. Thanks very much. One question. In this video, you compared the groups pairwise to identify which differences between the groups was significant. But what about the Type 1 error multiplicative effect for 3 groups. Why is this not a factor here?

  • @heshammohamed2524
    @heshammohamed25244 жыл бұрын

    Excellent work..... please Foltz what can I do if my data is non-normally distributed? what is the best method can I use instead of two-way ANOVA.

  • @vaishnavisingh7175
    @vaishnavisingh7175 Жыл бұрын

    Thanks Brandon!

  • @ElimelchRT
    @ElimelchRT3 жыл бұрын

    very good explained!

  • @liranzaidman1610
    @liranzaidman16103 жыл бұрын

    I love these videos

  • @MS-xb8pd
    @MS-xb8pd4 жыл бұрын

    8:51 when I put the same table in excel and run one way ANOVA: Single Factor, it gave me different results. I am facing problems with these statistical techniques when I perform them in excel. Please help me

  • @joyousmomentscollection
    @joyousmomentscollection4 жыл бұрын

    I love King's Island.. :) I have been there too.. 45 min drive from where I used to live .. lol

  • @alejandrocrates
    @alejandrocrates4 жыл бұрын

    thanks ever so much man

  • @tracykakyoalexis2155
    @tracykakyoalexis21552 жыл бұрын

    Thank you 😊

  • @Magmatic91
    @Magmatic913 жыл бұрын

    I find it hard to understand the part with error compounding. I mean, I know that in probability if two events are independent and have let's say a probability of 0.05 of happening (In our case Type One Error). Then if we want to repeat the experiment let's say 3 times, then we set P(Error) = 0.05 and then we have 0.05 ^3 = 0.0125%. So at the end we decreased our P(E) by repeating the experiment 3 times. I'm I getting something wrong here, can your please help me understand this concept? Thanks.

  • @selousscout9664
    @selousscout96643 жыл бұрын

    please explain when the 0.5 significance level is compounded, and when not. I see you doing t tests comparing each one individually in this video. Please help

  • @brunog.campos3236
    @brunog.campos32363 жыл бұрын

    4:24 what if the 3º value is not relevant for the comparison between 1 and 2, in addition to be completely independent from the 2º value? And the variance of these 3º value is masking the difference between 1 and 2?

  • @jemiyardenglem6160
    @jemiyardenglem61602 жыл бұрын

    Thanks

  • @jamaerdersin
    @jamaerdersin3 жыл бұрын

    I hace tree samples for tomatoes in differents mature states. Can I use LSD ?

  • @cococnk388
    @cococnk388 Жыл бұрын

    Morning sir, Which Post Hoc Test can we use for a TWO WAY ANOVA? W/O replication thanks.

  • @tonmoydas3520
    @tonmoydas35204 жыл бұрын

    Sir, please make tutorials for other post hoc analysis methods.

  • @karannchew2534
    @karannchew25343 жыл бұрын

    9:20 13:42 How is MSE Mean Square Error calculated?

  • @MrOndra31
    @MrOndra313 жыл бұрын

    At 7:57 point three: shouldn't it be "sample pair" instead of "population pair"?

  • @prateek2159
    @prateek21593 жыл бұрын

    In case of Beast VS Banshee we compared p-value with 0.05 but in case of Beast VS DiamondBack we compared it with 0.001, why ?

  • @dioakbar708
    @dioakbar7083 жыл бұрын

    could anyone told me how to do LSD in two factor anova without replication??

  • @BobTheZealot
    @BobTheZealot4 жыл бұрын

    9:18 "The alternative hypothesis that they are all not equal" should be "The alternative hypothesis that they are not all equal"

  • @karannchew2534
    @karannchew25343 жыл бұрын

    "Fisher’s LSD, which is the F test, followed by ordinary t-tests among all pairs of means, but only if the F-test rejects the null hypothesis. The F-test provides the overall protection against rejecting H0 when it is true."