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In a normal model, which of the following is true? about 90% of the values fall

ID: 3132717 • Letter: I

Question

In a normal model, which of the following is true?

about 90% of the values fall within one standard deviation of the mean

about 99.7% of the values fall within two standard deviations of the mean

about 95% of the values fall within two standard deviations of the mean

about 68% of the values fall within three standard deviations of the mean.

about 90% of the values fall within one standard deviation of the mean

about 99.7% of the values fall within two standard deviations of the mean

about 95% of the values fall within two standard deviations of the mean

about 68% of the values fall within three standard deviations of the mean.

Explanation / Answer

In a normal model, which of the following is true?

about 95% of the values fall within two standard deviations of the mean


the other are falls because

x +/- SD = 68%

x +/- 2*SD = 95%

x +/- 3*SD = 99%

about 95% of the values fall within two standard deviations of the mean

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