Which value of the correlation coefficient r indicates a stronger correlation than 0.72?
a. -0.75
b. 0.65
c. -0.70
d. 0.55
e. 0.60
4 Answers
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The answer is a. For future reference, the correlation coefficient (r) can be between -1 and 1, and the closer it is to either -1 or to 1 the stronger the correlation between the two variables is. The difference between a negative correlation and a positive correlation is that in a positive correlation as one variable increases, so does the other. In a negative correlation, as one variable increases, the other decreases. That said, whether r is positive or negative is not related to how strong the correlation is (ie negative correlations can be stronger than positive ones).
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If you get r = 0.72, you can’t compare this value with r = – 0.75 or r = – 0.7
As 0.72 is greater than 0.55, 0.6 and 0.65, you choose r = 0.72
If you have to choose between r = – 0.7 and r = – 0.75, you must choose r = – 0.75
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I’m curious to see the answer to this too
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Wow, thank you! I was wondering the same thing the other day
