Table 1.

Results of simulation study for genes having a true simulated trend

	Low variance		High variance
Average % correct:	K	Trend	K	Trend
K = 0	100%	99%	100%	94%
K = 1	97%	93%	92%	86%
K = 2	95%	88%	79%	72%

The average percent of genes over all simulations classified correctly in terms of K and the trend direction when the true K is simulated as either 0, 1, or 2 and the within-gene variance is either low or high