Question

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Suppose that there is a positive correlation between the variables k and l. If l is 150 when k is 7, which of these is most likely to be the value of l when k is 14.

A. 300
B. 75
C. 50
D. 150

Answer 1

We will solve this using a ratio.
\[\frac{ 150 }{ 7 }=\frac{ ? }{ 14 }\]
From here we see that 7 times 2 is 14.
We know that both sides of a ratio are equivalent, so what is 150 times 2?

Answer 2

300?

Answer 3

Yes.