The sample size setting is located on the Sampling tab of the Run Preferences dialog. Sample size, which is initially set to 500, affects Latin hypercube sampling. It divides each assumption’s distribution into a number of intervals of equal probability. The sample size governs the number of intervals for each distribution. Crystal BallCrystal Ball generates an assumption value for each interval according to the interval’s probability distribution.
While any sample size greater than 100 should produce sufficiently acceptable results, you can set this number higher to maximize accuracy. There is no absolute limit to sample size, although samples greater than 100,000 work best with at least 1 GB RAM and may take a long time to run. The increased accuracy resulting from the use of larger samples, however, requires additional memory. If memory becomes an issue, reduce the sample size and consider adding more RAM.