Correlation not accurate

[bronkomonko]

I want to see the correlation matrix for more than 100 variables. When I select all of them, open as group and show the correlation matrix the correlation is different than as if I only choose two variables. The values differ significantly which makes an analysis impossible. Am I missing out on something? I just selected the data for the regression, opened as group, then view and covariance analysis where i untick covariance and tick correlation and press ok. Alternatively, I select the data and then go to quick, group satistics and correlation.

How do I get the correct correlation matrix without doing it one by one?

Thanks for your help.

[trubador]

You are not doing anything wrong. It may be that the sample periods do not match between the variables. In that case, EViews balance the sample through listwise deletion.