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.
First and foremost, a winder tread cannot come to a point narrower than 6 inches at the inside edge. This is different from the common practice in the past of forming a 90-degree turn in a staircase by use of two 45-degree angle treads that came to a point on the inside corner.