Question

he scatter plot below shows 9 data points.

The graph shows (1, 5), (2, 4), (3, 6.5), (4, 6), (5, 5.8), (6, 5.4), (7, 5), (8, 7), and (9, 6.5).

Drawing a line through which two points creates a reasonable line of best fit for the data?

A.
(1, 1) and (8, 9)

B.
(1, 4) and (9, 7)

C.
(2, 4) and (7, 5)

D.
(1, 5) and (8, 7)

Answer 1

D. The line through (1, 5) and (8, 7) has a small positive slope and runs through the middle of the cloud of points, giving a reasonable fit (it balances points above and below the line).