There are tons of these.

Suppose you data on spouses and want to predict whether the husband or wife does most of the child care.

Suppose you have data on students in classes and want to look at test scores

Or on left eyes and right eyes and want to predict acuity of vision.

And lots more.

There are tons of these.

Suppose you have data on spouses and want to predict whether the husband or wife does more of the child care.

Suppose you have data on students in classes and want to look at test scores.

Or on left eyes and right eyes and want to predict acuity of vision.

And lots more.