Exercise 4 gave data on mass loading andmass removal. Values of relevant
Chapter 12, Problem 12(choose chapter or problem)
Exercise 4 gave data on mass loading andmass removal. Values of relevant summaryquantities area. Obtain the equation of the least squares line.b. Predict the value of BOD mass removal for a singleobservation made when BOD mass loading is 35, andcalculate the value of the corresponding residual.c. Calculate SSE and then a point estimate of s.d. What proportion of observed variation in removal can beexplained by the approximate linear relationshipbetween the two variables?e. The last two x values, 103 and 142, are much larger thanthe others. How are the equation of the least squares lineand the value of r2 affected by deletion of the two correspondingobservations from the sample? Adjust the givenvalues of the summary quantities, and use the fact thatthe new value of SSE is 311.79.
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