Page 36 - Industrial Process Plant Construction Estimating and Man Hour Analysis

6 Industrial process plant construction estimating and man-hour analysis

y ¼ bxþa
where

b¼the slope of the line
a¼y-intercept
The best fit line for the points (x1, y1), (x2, y2) … (xn, yn) is given by

y y ¼ bx xð Þ
where the slope is
2
ð
ð
b ¼ Σ xi xð Þ yi yÞ=Σ xi xÞ
and the y-intercept is
a ¼ y bx