Hi,
Miles Traveled, x: 2, 3,10,7, 8, 15,3, 1, 11 mean = 6.67
Sales, y: 31,33,78,62,65,61,48,55,120 mean = 61.4
Re: www.alcula.com/calculators/statistics/linear-regression/
Regression line equation:
a =and
y = 3.53x + 37.9
when x = 8 ⇒ y = 66.15
when x = 11 ⇒ y = 76.74