Step 7. To mark the stair railing, hold it in place, resting along the stairs, and mark it for the angled cut. Pre-drill the landing and treads for the balusters, using a special stair bit that drills the hole and then creates a thread to accept the baluster bolts.
What is interpolation? Interpolation is the process of estimating unknown values that fall between known values. In this example, a straight line passes through two points of known value. You can estimate the point of unknown value because it appears to be midway between the other two points. The interpolated value of the middle point could be 9.5.
Best Answer: Interpolation ('inter = between) is more reliable because you're estimating a data point that is between two known data points.xtrapolation estimates a data point outside the measured range where new trends could occur-extrapolation assumes that the same trend within the known range continues outside of the range. This assumption is not necessary with interpolation. Hope this helps.