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Aleonysh [2.5K]
3 years ago
5

Find the equation of the least squares regression line. Show all calculations, and be sure to define any variables used.

Mathematics
1 answer:
spayn [35]3 years ago
3 0
Steps
Step 1: For each (x,y) point calculate x2 and xy.
Step 2: Sum all x, y, x2 and xy, which gives us Σx, Σy, Σx2 and Σxy (Σ means "sum up")
Step 3: Calculate Slope m:
m = N Σ(xy) − Σx Σy N Σ(x2) − (Σx)2
Step 4: Calculate Intercept b:
b = Σy − m Σx N.
Step 5: Assemble the equation of a line.
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