ttest2 negative value

Question

Anass John 2019-1-14

0
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https://ww2.mathworks.cn/matlabcentral/answers/439703-ttest2-negative-value

回答： Star Strider 2019-1-14

Hi all,

I would like to test if the mean of vector X is lesser or greater or equal to the mean of a vector Y using the statistical hypothesis Student Test with the function ttest2(). I have read in an article that the function "ttest2" can return -1 if mean(X)<mean(Y), or 0 if (mean(X)==mean(Y)) or 1 if(mean(X)>mean(Y)). However, I didn't find how to do this with ttest2 since in the official documentation, there's no negative result.

Any help please ?

Many thanks