trying to solve the following statistical problem in jmp:

1. I got a gold standard y (for example: y = 100)

2. I got three data sets x1,x2,x3: (for example x1=92;94;99 / x2=92;94;99;101;103 / x3=92;94;99;101;103;107;100;99;100)

please note: the data sets have similar data, but the number of data points are different. all variables are continuous.

3. now I can calculate mean and sd for x1, x2, x3

I am looking for with a statistical test or function, to evaluate which dataset x1, x2 or x3 has the closest mean AND the lowest SD to match the gold standard y ? - please note: the gold standard y has no sd, just a fixed value.

Any advice much appreciated. Many thanks, Marc