y = mx + b m is the slope of the line and b is the intercept. The intercept is where the line crosses the y-axis, so it can also be called the y-intercept. When x = 0, we have y = 0x + b or y = 0 + b or y = b
Notice the sum of squares of deviations: 25,090 on page one 125,600 on page two 122.2 on page three 83.67 on page four ( The BEST FIT possible, best fitting LINE ) -------- BEST gives the LEAST amount of deviation from the line.
1 0 2 0.482 3 1.9 4 4.213 5 7.379 6 11.356 7 16.103 8 21.578