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Chapter 12: Simple Linear Regression and Correlation3. A scatter plot of the data appears below. The points fall very close to a straight line with anintercept of approximately 0 and a slope of about 1. This suggests that the two methods areproducing substantially the same concentration measurements.220y:1202050 100 150 200x:4.a.Box plots of both variables:BOD mass loadingBOD mass removal0 50 100 150x:0 10 20 30 40 50 60 70 80 90y:On both the BOD mass loading boxplot and the BOD mass removal boxplot there are 2outliers. Both variables are positively skewed.353

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