ttest function not working

I am trying to implement an independent samples ttest comparing two data sets (X and Y). Here is what I used: [h,p,ci,stat] = ttest2(X,Y)

Here is the error I receive: Undefined function or method 'ttest2' for input arguments of type 'double'.

Not sure why it's not locating ttest function. I'm in the main MATLAB directory. I appreciate any help.

Answer 1

[Image Analyst]

It's probably in the Statistics Toolbox. Do you have that? Use "ver" to find out.

[Arryn]

I don't have that toolbox, but I thought ttest was built into MATLAB with no need for the toolbox. Seems like the stats toolbox is for more advanced procedures like regression and ANOVA.

[Image Analyst]

Nope - it's only in the Stats Toolbox. You might have to try to write your own or find an equivalent function on the File Exchange. Please mark as Accepted if you have no more questions.

[Arryn]

Thanks, I'll check it out.