The effects on the outcome of the change in one factor may depend on the level of the other factor, so we need to consider the interactions between two factors. Two way ANOVA is an appropriate method to analyze the main effects of and interactions between two factors. Minimum Origin Version Required: Origin 2016 SR0.
Nosing â An edge part of the tread that protrudes over the riser beneath. If it is present, this means that, measured horizontally, the total ârunâ length of the stairs is not simply the sum of the tread lengths, as the treads actually overlap each other slightly.
Closed (Box) Traditional Treads. A box stair tread is a tread with a wall on both sides of the staircase and thus has no mitered returns. This is by far, the most common style stair tread and the traditional style means that the existing sub-tread will have to be removed before installing new stair treads.