Hey guys, I need your help. So I calculated the mean of 2 groups and then calculated the difference of these two means in excel and know I want to know if this difference is significantly different than zero. But I had to do preserve and restore before calculating the second mean. So I did summarize to see the result of the two means but because of restore the variable are not in the dataset anymore. So for example I want to know if the difference of the two means, e.g. 0,4 ist sig. different to zero. How to I calculate this? And to I have to do this for every single value or is there a faster way? I hope you understand my problem.
Code:
preserve
calulation of first mean
summarize
restore (in order to not shorten the dataset)

preserve
calculation of second mean
summarize
restore

then because of restore the mean variable 1 and 2 do not exist anymore in the dataset. Now I want to know if the difference of mean 1 and 2 ist sig. different to the value zero.

Thanks!