Rose, OK. Sponsored Topics. Rose is a small unincorporated rural community in southeastern Mayes County, Oklahoma, United States, on Scenic U.S. Highway 412. The post office was established March 13, 1891, with David Ragsdale as the postmaster. The ZIP Code is 74364. The community was said to have been named for Rowe's Prairie, which is nearby.
The formula below is used to compute percentiles of a normal distribution. where Î¼ is the mean and Ï is the standard deviation of the variable X, and Z is the value from the standard normal distribution for the desired percentile. Example:1  The mean BMI for men aged 60 is 29 with a standard deviation of 6.2  The mean BMI for women aged 60 the mean is 28 with a standard deviation of 7.here Î¼ is the mean and Ï is the standard deviation of the variable X, and Z is the value from the standard normal distribution for the desired percentile. Example: 1  The mean BMI for men aged 60 is 29 with a standard deviation of 6. 2  The mean BMI for women aged 60 the mean is 28 with a standard deviation of 7.
Finally, consider the 50th percentile of the numbers 2, 3, 5, 9, 11. R = 50/100 x (5 + 1) = 3. IR = 3 and FR = 0. Whenever FR = 0, you simply find the number with rank IR. In this case, the third number is equal to 5, so the 50th percentile is 5. You will also get the right answer if you apply the general formula: 50th percentile = (0.00) (9 - 5) + 5 = 5.