For example I may run correlations between height, weight, and blood pressure. One
subject may be missing blood pressure data. If I check Exclude cases listwise, SPSS will
not include that person’s data in the correlation between height and weight, even though
those data are not missing. If I check Exclude cases pairwise, SPSS will include that
person’s data to calculate any correlations that do not involved blood pressure. In this
case, the person’s data would still be reflected in the correlation between height and
weight. You have to decide whether or not you want to exclude cases that are missing
any data from all analyses. (Normally it is much safer to go with listwise deletion, even
though it will reduce your sample size.) In this case, it doesn’t matter because there are
no missing data. Click Continue. When you return to the previous dialog box, click
Ok. The output follow.