SAT question b2e54b50 (Command Of Evidence)

Question

Researcher Xiaolu Jia and colleagues monitored individuals’ velocity and the surrounding crowd density as a group of study participants walked through a space and navigated around an obstacle. Participants rated how congested it seemed before the obstacle, after the obstacle, and overall, and the researchers correlated those ratings with velocity and density. (Correlations range from −1 to 1, with greater distance from 0 indicating greater strength). The researchers concluded that the correlations with velocity are stronger than those with density. Which choice best describes data from the table that support the researchers’ conclusion?

College Board · Accepted Answer

The correct answer is D. Choice D is the best answer. The text tells us that the farther the correlation is from 0, the “stronger” it is (doesn’t matter if it’s negative or positive). The table shows that the correlations with velocity are farther from zero than the correlations with density, which supports the conclusion that the correlations with velocity are stronger.

Correlations Between Congestion Ratings and Features of the Crowd in Raters’ Immediate Vicinity
Crowd feature	Before obstacle	After obstacle	Overall
Density	$0.8592$	$0.7308$	$0.7447$
Velocity	$- 0.9357$	$- 0.9518$	$- 0.8587$

Explanation

Why the other choices are wrong

SAT Question b2e54b50: Command Of Evidence answer and explanation

Explanation

Why the other choices are wrong