Power & Effect Size

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  • Опубліковано 22 січ 2025

КОМЕНТАРІ • 46

  • @noway4879
    @noway4879 5 років тому +7

    Amazing video, i would recommend this to anyone in search of a basic and concise explanation.

  • @DavidLopez-br3yn
    @DavidLopez-br3yn 4 роки тому +3

    You are insanely good at explaining concepts, best regards from Colombia, South America.

  • @TehWhimsicalWhale
    @TehWhimsicalWhale 5 місяців тому

    Very clear explanations, concise and to the point. This is great!

  • @cassiemarkwell3262
    @cassiemarkwell3262 6 років тому +5

    This is my new favourite video on youtube! I've bene struggling to get these concepts right for so long - you've put them in such a clear and logical way! Thank you so much!!

  • @limlim_inpsylife
    @limlim_inpsylife 4 роки тому +6

    i like how clearly you explain those concepts! Please do more if you can

  • @joanb.townsend9762
    @joanb.townsend9762 2 роки тому +6

    Hi Courtney, I recently shared your video with a statistics class that I'm currently taking because your explanation of the concepts is very good! However, I was told by my professor that in 6 minutes 13 seconds of the video the effect size of ANOVA use eta was indicated, but it should be eta squared. Again, your explanation of the concepts impacted my understanding to the degree that I shared the video with my class! Therefore, great job and thank you for the clarity of the concepts!!!

  • @galenseilis5971
    @galenseilis5971 3 роки тому +1

    I've been doing Monte Carlo methods to estimate power of studies that are already published but did not report power. I don't see that as a waste of time because it helps me evaluate whether the study was likely to have missed an effect that other studies detected due to low power.

  • @saguembochranourhene8376
    @saguembochranourhene8376 4 роки тому +5

    What if we don’t have the effect size (no previous studies available)?

  • @foursite
    @foursite 2 роки тому

    Absolutely the best! Please keep it up. Thank you!

  • @mariasiscu1812
    @mariasiscu1812 8 місяців тому

    thanks for this. very clear. cheers from a romanian studying in the Netherlands :)

  • @18spaceyy36
    @18spaceyy36 6 років тому +6

    You have saved my Research dissertation!

  • @katomoon6170
    @katomoon6170 2 роки тому

    Many thanks from Uganda-East Africa

  • @irwin-hirsh
    @irwin-hirsh Рік тому

    thanks, both adding clarity and covering a broad area.... 🙂

  • @kiduswalelegne8774
    @kiduswalelegne8774 4 місяці тому

    I find your presentation very nice.

  • @eed3885
    @eed3885 3 роки тому

    Its awesome 🥰. thanks. Pls Do more useful, interesting videos.

  • @alisakravtsova5013
    @alisakravtsova5013 3 роки тому +1

    Nice explanation! And also a nice pace of speech :)

  • @Thingolness
    @Thingolness 6 років тому +12

    There might be a small mistake in one of the slides. At 6:00, first it's written as Cohen's "d" for small and then switches to (Pearson's ) "r" for medium and large.
    Thank you! Have my "Like"

  • @brandomiranda6703
    @brandomiranda6703 2 роки тому

    I don't get it. How do you compute power BEFORE you do the study? I cannot compute p-values for example without my data (since I can't compute the mean). Therefore, how do I actually compute the power before the study starts (before I collect data)? Is it just with simulated data and then using that and estimates of the means, stds, guess a sample size that is needed?

  • @조홍연-f6m
    @조홍연-f6m 2 роки тому

    Very clear and compact explanation. Thanks.

  • @Rdizzle512
    @Rdizzle512 3 роки тому +1

    Best one that has described effect size ty

  • @kidou123456
    @kidou123456 4 роки тому

    R square and Cohen's d has the opposite spectrum when they come to indicating effect size, where R square is negatively related to effect size, and Cohen's d is quite positively related.

  • @stephaniejade7056
    @stephaniejade7056 6 років тому +5

    Courtney: Is there a pdf of these slides, I would like to print them. Thanks for uploading/sharing :)

  • @Boss_is_in_your_area
    @Boss_is_in_your_area 10 місяців тому

    Thank you very much for that incredible video!! very helpful !

  • @Michael_Academia
    @Michael_Academia 4 роки тому +1

    Thank you so much! This has been extremely helpful.

  • @khaledf3977
    @khaledf3977 3 роки тому

    excellent explanation thank you

  • @xDomglmao
    @xDomglmao 7 років тому

    Nice explanation and voice.

  • @xzxAdio
    @xzxAdio 6 років тому

    When calculating the effect size do you use the number of participants enrolled or the intent to treat population numbers? For example there were 53 patients randomized to receive treatment X however two of those patients were exluded because of an incomplete baseline assessent. Do I use the number of patients initially enrolled (53) or the number of patients (51) after exclusion?

    • @marthabarker7484
      @marthabarker7484 6 років тому

      Use the number of participants left after exclusions, because the two you removed don't go into your calculations so they don't improve power.

  • @jiaxians7500
    @jiaxians7500 3 роки тому

    this video is very helpful. appreciate it!

  • @ballndkrump
    @ballndkrump 3 роки тому

    This helped me alot, thanxs! thumps up!

  • @marthabarker7484
    @marthabarker7484 6 років тому +1

    Fab video. Thank you.

  • @gabi6368
    @gabi6368 4 роки тому

    good explanation, thanks!

  • @PrabhathJayawardena
    @PrabhathJayawardena 3 роки тому

    Thanks for this video!

  • @taraditha
    @taraditha 2 роки тому

    Thank you so much

  • @oktiratnamafruhah4181
    @oktiratnamafruhah4181 3 роки тому

    Thank you!

  • @kabongontumba9492
    @kabongontumba9492 5 років тому

    no voice ???

  • @FunnyBrosVids
    @FunnyBrosVids 6 років тому

    thanks so much! this was super helpful!

  • @MrSeagull16
    @MrSeagull16 7 років тому +6

    its fun to say your last name

  • @ayubaalim2201
    @ayubaalim2201 3 роки тому

    Power & Effect Size

  • @guit-art6666
    @guit-art6666 4 роки тому

    thanks a lot!!!

  • @aneerasadiq71
    @aneerasadiq71 7 років тому

    Good

  • @Dr.Khalafzai
    @Dr.Khalafzai 6 років тому +3

    I suggest to please speak a little slower so that everyone one could follow, particularly those whose first language is not English.

  • @notsorichrico
    @notsorichrico 6 років тому +4

    I would like to marry you. Thank you!

  • @Johnsmith_92
    @Johnsmith_92 Рік тому

    Thank you!