Posted by luckybee on Tuesday, January 10, 2012 at 10:50pm.
mean ± 1 SD = 68.26%
This is true for any normal distribution. Is there something you are not telling me?
There is a picture of a histogram. the numbers on the x-axis are: 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, and 76. the numbers on the t-axis are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. there are additional symbols: sigma x =2100, sigma x^2=142540, and Sx=3