Question

The correlation between two variables x and y is r = 0.121. What conclusion can we draw? Select one: a. None of the above b. The correlation between x and y is low, but that does not matter. We can still use least-squares regression to calculate an equation of the form y=ax+b. c. Because the correlation is so low, the relationship between x and y is not very strong, thus there is no use in studying the relationship. d. Because the correlation is so low, we only know that the linear relationship between x and y is not very strong, but there may be a different relationship between the two variables. We need to first look at a scatterplot.

          The correlation between two variables x and y is r = 0.121. What conclusion can we draw?

Select one:
a. None of the above
b. The correlation between x and y is low, but that does not matter. We can still use least-squares regression to calculate an equation of the form y=ax+b.
c. Because the correlation is so low, the relationship between x and y is not very strong, thus there is no use in studying the relationship.
d. Because the correlation is so low, we only know that the linear relationship between x and y is not very strong, but there may be a different relationship between the two variables. We need to first look at a scatterplot.

The correlation between two variables x and y is r = 0.121. What conclusion can we draw?

Select one:
a. None of the above
b. The correlation between x and y is low, but that does not matter. We can still use least-squares regression to calculate an equation of the form y=ax+b.
c. Because the correlation is so low, the relationship between x and y is not very strong, thus there is no use in studying the relationship.
d. Because the correlation is so low, we only know that the linear relationship between x and y is not very strong, but there may be a different relationship between the two variables. We need to first look at a scatterplot.

Added by Manuel W.

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