As a parent, you change thousands of diapers. But there comes a day when you hit the diaper aisle and think, “This might be the last time I need to buy these.” You’ve potty trained. Accidents are ...

Hurray! Your little girl has ditched her diapers and there’s much rejoicing in the house. But wait a minute — is she suddenly having accidents again? Or asking to wear diapers instead of the cute ...

In most applications, regression models are merely useful approximations. Reality is often so complicated that you cannot know what the true model is. You may have to choose a model more on the basis ...