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Author Question: In assessing the normality of data, why is a normal probability plot especially advantageous for ... (Read 54 times)

big1devin

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on: Jul 25, 2018
In assessing the normality of data, why is a normal probability plot especially advantageous for small samples?
 
  What will be an ideal response?

Question 2

The scores from a state standardized test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to find the percentage of students with scores between 70 and 130.
 
  A) 95 B) 100 C) 99.7 D) 68


stanleka1

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Reply #1 on: Jul 25, 2018
Answer to Question 1

Because it is especially difficult to assess the shape of a histogram when the data set is small but it is relatively easy to judge whether a string of data points forms a straight line regardless of how many points you have (as long as you have at least three or so).

Answer to Question 2

A


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