Hello,
You are on the right track. The Random Normal function by default will use mu =0 and sigma = 1.
This can easily be changed in your formula as shown below:
![7415_Screen Shot 2014-10-10 at 10.01.51 AM.png 7415_Screen Shot 2014-10-10 at 10.01.51 AM.png](https://community.jmp.com/t5/image/serverpage/image-id/885i98F4DEC808C30C77/image-size/medium?v=v2&px=400)
The Coefficient of Variation is what you need to display the RSD or %RSD. To display the coefficient of variation look under the red triangle of Summary Statistics and select Customize Summary Statistics.
![7418_Screen Shot 2014-10-10 at 10.25.42 AM.png 7418_Screen Shot 2014-10-10 at 10.25.42 AM.png](https://community.jmp.com/t5/image/serverpage/image-id/886i1C251D88B6EBD35C/image-size/medium?v=v2&px=400)
Check the box next to CV and then click OK.
![7419_Screen Shot 2014-10-10 at 10.27.04 AM.png 7419_Screen Shot 2014-10-10 at 10.27.04 AM.png](https://community.jmp.com/t5/image/serverpage/image-id/887i456A480B782BCB22/image-size/medium?v=v2&px=400)
And if you look at the distribution of both A and the simulated A we do indeed now have an normal distribution for the simulated A.
![7417_Screen Shot 2014-10-10 at 10.19.24 AM.png 7417_Screen Shot 2014-10-10 at 10.19.24 AM.png](https://community.jmp.com/t5/image/serverpage/image-id/888i2948E977A34CF65C/image-size/medium?v=v2&px=400)
Best,
Stan