A line of best fit is $y = 6x + 50$ (hours studied vs test score). What does the slope mean?

Each additional hour is associated with about 6 more points

A linear fit has a correlation coefficient $r = -0.95$. This indicates:

A strong negative linear relationship

A lurking variable (hot weather) may drive both, so this is not causation

12questions. Pick an answer and you'll see why right away.

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A line of best fit is $y = 6x + 50$ (hours studied vs test score). What does the slope mean?
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A linear fit has a correlation coefficient $r = -0.95$ . This indicates:
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