Could you please explain to me when I should use the two proportion tests? A two...

Could you please explain to me when I should use the two proportion tests?

A two proportion f test tests variance/standard deviation. So if it is testing how much the two proportions vary then isn't it doing what a linear regression t test does?

Whats the difference between a linear regression t test and goodness of fit test statistic?

Is there such thing as a two proportion chi squared test or is that just an f test?

The only difference between a two proportion t test and a two proportion z test is the knowing of a population standard deviation so that is good.

As you can see I'm all jumbled up.

Expert Solution

two proportion z test his done when we want to compare two population based on their proportion of certain attributes...as an example if we want to check smoking habits between two gender (M,F) we shall do two proportion z test.
By. t test in linear regression we try to determine the extent of linear interdependence between two variables that is we want to know if the two variables under our study are really correlated to each other or not equivalently we can say that the linear relationship between two variables are significant or not. this type of questions can be answered by t test.
there is no such thing as two proportion chi square test. chi-square test is usually used too determine goodness of fit.
f test is used to test whether two populations have the same variance or not or F-test is used in Anova, Ancova and to check the validity of a fitted regression model.

if u have further queries do let me know in the comments section, always happy to help

milcah answered 1 year ago

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