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Which of the following two variables have a correlation coefficient of 1? Outside temperature and sales...

Which of the following two variables have a correlation coefficient of 1?

Outside temperature and sales of ice cream on that day
One's daily sugar intake measured in pounds and one's daily sugar intake measured in kilograms
One's length of time spent studying and one's grade on a test
One's height and one's IQ
math   Statistics-And-Probability   
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Answer #1

The two variables have a correlation coefficient of 1 is:

Answer: One's daily sugar intake measured in pounds and one's daily sugar intake measured in kilograms.

Explanation:

Here one variable is One's daily sugar intake measured in pounds and another variable is one's daily sugar intake measured in kilograms. Each observation in daily sugar intake (pounds) changes daily sugar intake (kilogram) in same extent. Thus the correlation coefficient between these two variables is 1.

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