Q.6.116
Question
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, or dotplot?
Step-by-Step Solution
Verified Answer
We prefer the probability plot to a histogram, stem and leaf diagram, or dot plot for assessing the normalcy of a variable in small samples.
1Step 1: Given Information
Consider the probability plot.
A normal probability plot is a graphical tool for detecting significant deviations from the norm.
2Step 2: Explanation
It is a graphical depiction of examining the data set, which is essentially regularly distributed. The plot is typically distributed if it is straight and diagonal; otherwise, it is not. The probability plot outperforms other graphs when the sample size is limited.
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