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

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.

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

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

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

Unique Chi-sq plot, excellent job!

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!!!

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

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 %) ?

Really love your explanation

Why don't you take an example when P

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)

Thanks a lot, man! great video

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

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

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??

How to get that plot of hypothesis significace?

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

private and business too.

Thank you so much

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

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

I'm only 10