In a well-fitting model what kind of distribution should this R command display?: hist(olsmodel$residuals)
A) Dots around a 45-degree line
B) A bi-modal distribution
C) A normal distribution
D) A random distribution

Question

Quizplus · Accepted Answer

In any well-fitting predictive model, residuals should be normally distributed. This is because to be well-fitting, most predictions should be close to observed values and residuals (observed minus expected) should be close to zero. High and low predictions should trail off in either direction, forming the bell-shaped curve which characterizes a normal distribution.

In a Well-Fitting Model What Kind of Distribution Should This