z-Test for Proportions, Two Samples

[@MrRobots100]

Thanks a lot lad, I passed cuz of you. So helpful during the final moments. Excellently explained

[@arahheath]

When you calculated Z you had a Z of 2.869 however I believe you meant to say that you had a Z of -2.869.

[@silkenlim7678]

clear and straight to the point, thanks!

[@johnlfn13]

How would you incorporate a finite population correction into this formula?

[@lsmith647]

What happens if there is no common denominator?

[@aprds7591]

How did you get 0.9750 as the area in the body? what is the formula?

[@proice974]

1-0.025=0.975

[@attorianzo1]

What is the difference between z-test for proportions and chi square test?

[@soroneir1260]

I just did a chi square test on my data and I'm following it up with a z test. I believe the biggest difference is that the chi square can test many variables at once, whereas the z test only compares two populations. In my case, I used the chi square to see if pollen grain structure was related to the pollination method. That test told me there's a significant relation, but not which structures are related to pollination method. So I looked at which structure types appear correlated with pollination method, and I'm going to do the z test for each of those to see if animal-pollinated species and wind-pollinated species have a difference in the frequency of, say, spiky pollen.

[@harrymackenzie2954]

Hi, Thanks for the video. I'm trying to use this test in an academic write up, and have come across two questions. Firstly, does this have a specific name or has it been used by any researchers that you can remember so I can include that in my academic paper? Secondly, do you know how to do this on SPSS? Thanks for your help, Harry

[@soroneir1260]

It's called a two proportion Z test. And I was just looking into doing with with SPSS, and apparently it cannot be done without a third-party tool. If you have graduated by now, congratulations.

[@UserU]

Well explained video. Thumbs up.

[@mustafabohra2070]

Thank you so much!

[@AshrafulIslam-hd2rs]

Nice work :)

[@Rxdevictoriam]

Awesome thanks

[@vincetheodorecanete1326]

am I the only one here who is confused with the spelling on alternative hypothesis?