Bell Shaped Histogram Standard Deviation. The middle 68 of values is within the range 46 x 10 where x represents the values for the number of hours she spent online in a week. This says that the points of inflection in the bell shaped curve lie one standard deviation above and below the mean.
The normal distribution is bell-shaped and symmetric. Multiply the standard deviation 2749 by 6 to get 16496. In the Parameters pane enter the number calculated in cell B2 29 in the example in the Mean box.
Within one standard deviation of the mean approximately 68 of all observations fall.
This value can be calculated using Mean 3 Standard Deviation 65-310. A set of data whose histogram is bell-shaped yields a mean and standard deviation of 50 and 4 respectively. The middle 68 of values is within the range 46 x 10 where x represents the values for the number of hours she spent online in a week. Interpreting the Standard Deviation for Bell-Shaped Curves.
