FIGURE 2.

Error analysis of factorial cumulants. A computer generated 100 sets of Poisson distributed random data with 10⁶ data points in each set. The sampling average (▵) and variance (⋄) of the factorial cumulants are shown in a and b. The variance (⋄) was also determined by our theory from a single data set. Both theoretical and experimental variances of the factorial cumulants are in agreement.