Figure 2.

Fits of the simple models of completely random choice. Simple normal models: (a) For the Utah data set, only the fitted c shows no significant lack of fit to the data (ĉ=5.656, P=0.373). (b) For the Denmark data set, both the 4-cell and fitted-c models show no significant lack of fit (4-cell: P=0.132; fitted-c: ĉ=4.4685, P=0.063). Simple beta models: (c) For the Utah data set, only the fitted-c model shows no significant lack of fit to the data (ĉ=5.4064, P=0.139). (d) For the Denmark data set, both the 8-cell and fitted-c models show no significant lack of fit (8-cell: P=0.0525; fitted c: ĉ=4.4325, P=0.179).