**SOLUTION Given a mean of 120 and a standard deviation of**

I assume P1 through P99 are the 1%ile through 99%ile, as we might calculate using Excel PERCENTILE. In that case, I believe you can only estimate …... Standard deviation is not a range. It is a single number that represents how much the data is a set of observations varies about the mean. Mathematically it is the square root … of the sum of the squares of the differences between the samples and the mean divided by N, or divided by N-1.

**Given a mean of 55 and a standard deviation of 12.5 find**

How can you estimate the mean and standard deviation if your given two percentiles and their values The 16th percentile of a normal distributed variable has a value of 25 and the 97.5th percentile …... Finding the percentile rank for a given Z-score. =NORMSDIST(Z) Example: The width of bolts of fabric is Normally distributed with mean 1953 mm and standard deviation 26 mm. What is the probability a random chosen bolt has a width above 1920 mm? Solution: The Z score for 1920 is 1.2692 26 1920 1953 Z. In the spreadsheet then, obtain the appropriate percentile rank for this Z-score as follows

**How do you find a percentile given the mean and standard**

A difference of 10 (positive or negative) from the mean is a difference of one standard deviation. For example, a score of 70 is two standard deviations above the mean, while a score of 0 is one standard deviations below the mean. how to find out time signature Each sigma in the diagram is one standard deviation from the mean. Determining the mean can be somewhat artificial and arbitrary, being dependent on whether one chooses to use mean, mode, or median as the method of determining the location of the so-called 50th percentile.

**Calculate the Standard deviation from Mean and Percentiles**

we get the normal distribution with mean 81.69 and standard deviation SD. Here we have used the mean we were given, simply noted that the median being nearly identical to the mean is not inconsistent with the normal distribution and we used the two remaining quantiles to estimate the standard deviation. how to find gold in your house we get the normal distribution with mean 81.69 and standard deviation SD. Here we have used the mean we were given, simply noted that the median being nearly identical to the mean is not inconsistent with the normal distribution and we used the two remaining quantiles to estimate the standard deviation.

## How long can it take?

### Using R how to estimate a distribution using known mean

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## How To Find Standard Deviation Given Mean And Percentile

You can put this solution on YOUR website! Given a mean of 120 and a standard deviation of 5.5, find the 95th percentile.----Find the z-value with a left tail of 0.95.

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- Given a mean of 120 and a standard deviation of 5.5, find the 95th percentile. Answers are rounded to the nearest tenth. Answers are rounded to the nearest tenth. Submitted: 7 years ago.
- we get the normal distribution with mean 81.69 and standard deviation SD. Here we have used the mean we were given, simply noted that the median being nearly identical to the mean is not inconsistent with the normal distribution and we used the two remaining quantiles to estimate the standard deviation.
- 11/07/2012 · Best Answer: For the standard normal distribution the 75th percentile, s, is at z=0.674 But z=(s- mean)/SD = 0.674. You say you have s and mean and so can find SD. You should get the same value if you use any of the other percentiles.