STATISTICAL TECHNIQUES AND TOOLS
REGRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following statements is not true of the correlation r between the lengths in inches and weights in pounds of a sample of brook trout?
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r must take a value between-1 and 1.
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r is measured in inches.
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If longer trout tend to also be heavier, then r>0.
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r would not change if we measured the lengths of the trout in centimeters instead of inches.
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Explanation:
Detailed explanation-1: -In general, the coefficient of correlation measures the strength of the relationship between the two variables. Hence, statement B is true. The coefficient of correlation ranges from −1.00 (perfectly negative correlation) to +1.00 (perfectly positive correlation).
Detailed explanation-2: -The correct answer is d. The correlation value between the given two variables denotes the strength and direction of the linear relationship between them.
There is 1 question to complete.