Digital SAT Math Practice Question #2531
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Desmos / Statistical Reason: Filter conditional probability denominators carefully — 'out of what total' is always the key.
Multiplying data by constant $c$ multiplies standard deviation by $|c|$ and variance by $c^2$. Here $3^2 = 9$....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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