A set of data has a correlation coefficient r = 0.15. Is it reasonable to use the line of best fit to make predictions from the data? yes no Explain your reasoning.
2 answers:
No its not a good reasonable fit to use a linear regression line. Why not? Because r = 0.15 is closer to r = 0 than it is to r = 1. This is fairly weak linear correlation. If r was say something like r = 0.7 or higher, then it would be stronger linear correlation.
No
Explanation:
<em>It is not reasonable to use the line of best fit to make predictions.
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<em>The correlation coefficient for the data is close to zero.
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<em>The correlation coefficient measures how well a line fits a set of data.
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<em>The correlation coefficient suggests that the relationship between the two variables is weak.
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