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Chapter 6: Q.6.118 (page 283)

Explain in detail what a normal probability plot is and how it is used to assess the normality of a variable.

Short Answer

Expert verified

The data is spread in a linear way.

Step by step solution

01

Given Information

Consider the concept of "variable normalcy."

A random variable's normality is a quality of a normal distribution-distributed random variable.

02

Explanation

The normalcy probability plot is a graphical method for determining whether or not data is normally distributed. The line is constructed between observed variable values and normal scores. If the variable is regularly distributed, the plot should be linearly approximated; otherwise, it should not be.

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