AQR Section 18: Sample Mean and Sample Standard Deviation
Drag point A. Notice how the location of point A changes the sample mean and sample standard deviation. Where must point A be located so that the sample standard deviation is as small as possible?
AQR Section 18: Sample Mean and Sample Standard Deviation
The 68-95-99.7 Rule
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a visual representation of the 68-95-99.7 Rule. |
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1. What percent of the data will fall between 1 standard deviation above and 2 standard deviations below? 2. what percent of the data will fall below 2 standard deviation from the mean? 3. What percent of the data will fall between 2 and 3 standard deviation from the mean? |