Question

The scatterplot shows the time it takes for a new hot plate to boil various amounts of water, and one lab group’s attempt at a line of best fit.

A graph shows water (cups) labeled 1 to 9 on the horizontal axis and time (minutes) on the vertical axis. A line increases from 1 to 8.

What feedback should another lab group give during a peer review of the work?

The line of best fit is reasonable because it does not go through any points.
The line of best fit is not reasonable because it has more points below it than above it.
The line of best fit is not reasonable because it does not go through any points.
The line of best fit is reasonable because it goes through the largest number of points.

Answer 1

"The line of best fit is not reasonable because it has more points below it than above it."

Explain: A good line of best fit should balance the points — roughly as many above as below — so it doesn't systematically over- or under-estimate the data.