Question 928630
7 35
8 30
9 25
10 20
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copy and paste the above x,y pair list in to this solver:
https://sooeet.com/math/linear-regression.php
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equation of the best fitting line:
y = -5x + 70
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correlation coefficient = -1
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the absolute value of correlation coefficient = 1 so the data is perfectly linear.
the closer to zero the absolute value of the correlation coefficient, the less linear is the data
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the sign of correlation coefficient is negative. this means the regression line has a negative slope (is decreasing)
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answer:
the data's relationship is a decreasing linear function
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