Categorical Data I: Proportions testing | Z test | Chi Squared test

แชร์
ฝัง
  • เผยแพร่เมื่อ 28 ม.ค. 2025

ความคิดเห็น • 27

  • @sixtysixx3933
    @sixtysixx3933 5 ปีที่แล้ว +2

    right way of using prezi-like presentation. This way we could see what is going to happen for the next, as well as keeping an eye on the calculation. I just dont like many are using prezi just for absolutely any kind of presentations. Sometimes it is not appropriate at any sense.

  • @ruili7941
    @ruili7941 2 ปีที่แล้ว

    Unique Chi-sq plot, excellent job!

  • @lancelotdsouza4705
    @lancelotdsouza4705 2 ปีที่แล้ว

    Really love your explanation

  • @songs6206
    @songs6206 4 ปีที่แล้ว +2

    Thank you so much. This is very clear and helpful!

  • @heshammohamed2524
    @heshammohamed2524 3 ปีที่แล้ว +4

    Please, I need to know the situations that we use Chi-square and not z-test, or vice versa. Thanks in advance.

  • @diegoj9056
    @diegoj9056 4 ปีที่แล้ว +1

    Thanks a lot, man! great video

  • @redforce9005
    @redforce9005 3 ปีที่แล้ว +2

    Could you please explain how you got the formula for Z test?

  • @gregwilmot5820
    @gregwilmot5820 3 ปีที่แล้ว +1

    Ho w do you perform z test for proportions in excel on every row of a table with like 500 observations? (I need a draggable formula)

    • @hoihoi3994
      @hoihoi3994 3 ปีที่แล้ว

      Just look up the table on the internet

  • @abhijitmahapatra8024
    @abhijitmahapatra8024 4 ปีที่แล้ว +1

    really not clear about why 0.0038 is the reason of not acceptance, in multi class tennis grip, expected value calculations??

  • @billyoung8118
    @billyoung8118 3 ปีที่แล้ว +3

    The 2nd part (hypothesis about hand grip) has the wrong degree of freedom. (row-1)*(column-1)=(3-1)*(2-1)=2*1=2. Not 4. This gives the p-value to be 0.3215. The Excel formula for the p-value is: =1-CHISQ.DIST(2.26938,2,TRUE)
    Crap - now I just continued listening to his video and he corrected it. My bad!!!

  • @habao321
    @habao321 5 ปีที่แล้ว +1

    Why don't you take an example when P

  • @weisanpang7173
    @weisanpang7173 9 หลายเดือนก่อน

    Given % of women vs men with tennis elbow being 20% vs 6%, and the null hypothesis being that they should be the same, why is the expected value = average of (20%, 6 %) ?

  • @topsydyla
    @topsydyla 4 ปีที่แล้ว +1

    How did u get the value of expected for the last example?

    • @abbyhose7311
      @abbyhose7311 3 ปีที่แล้ว

      Row total * column total / grand total

  • @TiffanyJ399
    @TiffanyJ399 4 ปีที่แล้ว

    can you explain how you got the values in pink for the hand grip table?

  • @AgamGamez
    @AgamGamez 9 ปีที่แล้ว +8

    HI, you haven't clearly explained how you are getting p-values, with the tables and details.

    • @tinkytinkz
      @tinkytinkz 9 ปีที่แล้ว +1

      +AgamGamez There's no simple formula to produce a pvalue, by hand.

    • @AgamGamez
      @AgamGamez 9 ปีที่แล้ว +1

      +Steve Bromann me only 10 lol.

  • @utubemania9079
    @utubemania9079 3 ปีที่แล้ว

    How to get that plot of hypothesis significace?

  • @jeevan999able
    @jeevan999able 4 ปีที่แล้ว

    Thank you so much

  • @cyanide4u539
    @cyanide4u539 6 ปีที่แล้ว

    Hi can you help me in using nonparametric tests in my research about seasonal variations effect on human health???? like blood pressure and blood sugar level??

  • @shakkharbiswas3446
    @shakkharbiswas3446 4 ปีที่แล้ว

    Can anyone give me the link of the 2nd part of this video?

    • @marcoventura9451
      @marcoventura9451 3 ปีที่แล้ว

      th-cam.com/video/zn11S2m_20A/w-d-xo.html

  • @shafikhan100
    @shafikhan100 4 ปีที่แล้ว

    i am not clear why you are using chi-square for two groups as chi-square is for more than 2 groups
    thanks!!

  • @happyandhealthy888
    @happyandhealthy888 ปีที่แล้ว

    private and business too.

  • @AgamGamez
    @AgamGamez 9 ปีที่แล้ว +2

    I'm only 10