The following is a portion of a classic data set called the "pilot plot data" in Fitting Equations to Data by Daniel and Wood, published in 1971. The response y is the acid content of material produced by titration, whereas the regressor x is the organic acid content produced by extraction and weighing. a. Fit a simple linear regression; estimate a slope and intercept. Y 76 123 62 55 66 100 58 75 88 159 70 109 37 48 82 138 88 164 43 28

multiple regression analysis formula

(1) Write out the regression equation (2) What is the sample size used in this investigation? (3) Determine the values of *, ** and ***, ****

Oil Recovery A U.S. state's Bureau of Economic Geology published a study on the economic impact of using carbon dioxide enhanced oil recovery (EOR) technology to extract additional oil from fields that have reached the end of their conventional economic life. The following table gives the approximate number of jobs for the citizens that would be created at various levels of recovery. Percent Recovery (%) 20 Jobs Created (Millions) Find the regression line. ()-0.135x+5.15 x Need Help? Submit Answer Use the regression line to estimate the number of jobs (in millions) that would be created at a recovery level of 70%. x million jobs Read It 8 Watch It 40 80 100 11 14 20