Q.6.118
Question
Explain in detail what a normal probability plot is and how it is used to assess the normality of a variable.
Step-by-Step Solution
Verified Answer
The data is spread in a linear way.
1Step 1: Given Information
Consider the concept of "variable normalcy."
A random variable's normality is a quality of a normal distribution-distributed random variable.
2Step 2: 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.
Other exercises in this chapter
Q.6.116
Under what circumstances is using a normal probability plot to assess the normality of a variable usually better than using a histogram, stem-and-leaf diagram,
View solution Q.6.117
Explain why assessing the normality of a variable is often important.
View solution Q.6.119
How is a normal probability plot used to detect outliers?
View solution Q.6.120
Explain how to obtain normal scores from Table III in Appendix A when a sample contains equal observations.
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