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The above graph shows the normal probability plot for the voltage data of Example 4.30. The graph below shows the normal probability plot for a random sample of the same size from a normal distribution. Click repeatedly on the "New Sample" button below to get a sense of what the normal probability plots look like when the data come from a normal distribution.
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| Now, change the sample size in the box and see how that affects the normal probability plot for samples that are indeed from a normal distribution. |
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