Table 4.

Type I Error Rates for Testing Multiple Fixed Span Sizes with Adjusted Nominal α Level^‡

Spans Evaluated	Univariate Smooth*	Bivariate Smooth*
5 Spans	0.024	0.026
3 Spans
0.1,0.5,0.9	0.031	0.037
0.3,0.5,0.7	0.027	0.021
0.5,0.7,0.9	0.024	0.027

^‡Null hypothesis rejected if one or more statistics fall in upper $100\left(\raisebox{1ex}{$\alpha $}\!\left/ \!\raisebox{-1ex}{$\#spansevaluated$}\right.\right)\%$ of permutation distribution

^*P(Success) = 0.05