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.
Step â The step is composed of the tread and riser. Tread â The part of the stairway that is stepped on. It is constructed to the same specifications (thickness) as any other flooring. The tread âdepthâ is measured from the outer edge of the step to the vertical âriserâ between steps. The âwidthâ is measured from one side to the other.