Table 2.

Discretization method and discretized values for each variable.

Variable	Discretization method	Discretized values
Time Theory	Equal-width	Low, Medium, High
Time Task	Equal-width	Low, Medium, High
Time Forum	Equal-width	Low, Medium, High
Relevant Actions	Equal-width	Low, Medium, High
Days Theory	Equal-width	Early, Normal, Late
Days Task	Equal-width	Early, Normal, Late
Days “hand-in”	Equal-width	Early, Normal, Late
Days Forum	Equal-width	Early, Normal, Late
Days Post	Equal-width	Early, Normal, Late
Performance	Manual-Method	Low, Medium, High