Question

19. If you observe the values of a normally distributed variable for a sample, a normal probability plot should be roughly_________

Short answer

If you observe the values of a normally distributed variable for a sample, a normal probability plot should be roughly linear.

Step-by-step solution

Concept Introduction

A variable with a normal distribution has a histogram (or density function) that is symmetric around the mean, bell-shaped, and has only one peak.

Explanation

A normal probability plot is roughly linear if the values of a normally distributed variable are observed for a sample.

If the variable follows a normal distribution, the plot becomes linear.