A set of data is collected, pairing family size with
average monthly cost of groceries.
Using the least squares regression method, which is the
line of best fit?
400 4y
line b
360 +
line c
320 +
Oline a
line b
Olinec
None of the lines is a good fit for the data
line a
280
240 +
Grocery Cost ($)
200
160 +
120 +
80
40
+
2 3 4
Family Members
5
6