Regression & correlation: Turbidity level and rainfall
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In a water treatment plant, the turbidity level is suspected to be linearly related to the inches of accumulated rainfall in the month, x. The following information related to the waste water plant is available:
Turbidity Level 1 2 3 4 5 6
Inches of Water 5.6 4.6 4.5 3.7 3.2 2.7
a. Find the equation of the line using the least squares method that best describes these data.
b. Calculate the correlation coefficient.
c. Predict the value of y for a turbidity level of 3, using the equation of the line previously found.
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Solution Summary
This solution includes the correlation and regression outputs from Excel. Also included is the conclusion based on the results.
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SUMMARY OUTPUT
Regression Statistics
Multiple R 0.9871045539
R Square 0.9743754004
Adjusted R Square 0.9679692505
Standard Error ...
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