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A correlation near zero tells us that no linear or curvilinear relationship exists between variables.

a) True
b) False

User Suncatcher
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Final answer:

The correct answer is option b) False. The statement is false; a correlation near zero indicates no linear relationship between variables, but a non-linear or curvilinear relationship might still exist.

Step-by-step explanation:

A correlation coefficient near zero does not necessarily mean that no relationship exists between the variables; it simply means that there is no linear relationship. However, there could still be a curvilinear (non-linear) relationship present. For example, if you have a set of data that forms a perfect U-shape on a scatter plot, the correlation coefficient might be very close to zero, but there is clearly a relationship between the variables—it's just not linear. Therefore, saying a correlation near zero indicates no relationship at all is incorrect.

The correlation coefficient indicates the strength and direction of a linear relationship between two variables. A coefficient close to +1 or -1 indicates a strong linear relationship, while one close to 0 indicates a weak linear relationship. However, this doesn't address potential non-linear relationships that could exist between the variables.

User BradStevenson
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