Table 4 shows the comparison of the R2 and three different AIC values obtained for four different approximations, generated using the results of the sessions completed by all the participants. These R2 and AIC values indicate that a power approximation represents the best-fit model for all of the trends, except for the negative trend in ‘All available sessions’ where a linear function seems to have a better fit.

Table 4

Coefficient of determination and AIC values for the different tested models

 
 

The shaded boxes indicate the preferred model for a specific model selection criterion.

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