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Recognize the Range and Unitless Nature of Correlation
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DSST
DSSTSTAT.114 Recognize the Range and Unitless Nature of Correlation
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A report gives r
2
= 0.81 and then says r = 0.81 inches. What is the strongest correction focused on r?
A
The value of r must always equal r
2
.
B
The correlation r is unitless, and r
2
= 0.81 does not justify reporting r with inches.
C
The inches label is required because r
2
is unitless.
D
The correlation must be 81 inches because r
2
is 0.81.
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