An ice cream vendor would like to predict daily sales of ice

An ice cream vendor would like to predict daily sales of ice cream cones based on the temperature outdoors. Data for a random sample of 8 days are provided in the table below.

The regression line with

Solution

  Data: (6, 135), (8, 50), (12, 125), (16, 100), (18, 200), (22, 150), (28, 250), (28, 175)
n= 8; ?x= 138; ?x