According to the Empirical Rule,the Percentage of Observations in a Data

question 23

Multiple Choice

According to the Empirical Rule,the percentage of observations in a data set (providing that the data set has a bell-shaped and symmetric distribution) that should fall within two standard deviations of their mean is approximately:

• A)90%
• B)95%
• C)97.5%
• D)100%

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