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The Scores Below Are Performance Scores for Six Subjects on Trial

Question 149

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The scores below are performance scores for six subjects on Trial 1 and Trial 30 of a test of motor skills.  Trial 1  Trial 30321625220633523834\begin{array} { c c } \text { Trial 1 } & \text { Trial } 30 \\3 & 21 \\6 & 25 \\2 & 20 \\6 & 33 \\5 & 23 \\8 & 34\end{array}
a. Compute r.
b. What value for Trial 30 would be predicted from a Trial 1 score of 7?
c. Explain the meaning of this correlation in a sentence or two.

Correct Answer:

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a.
\[\begin{array} { c c c }
\Sigma \ma ...

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