Find the least-squares regression coefficients and diagnostics for the data and function form given below. T1 3. -1 0. 22 -3 I2 -2 2 -5 -5 85 The fitted function is y = TSS is RSS is R is R is 01 1.

The equation of the least-squares regression line is ý = 68.5 + 11.4x, where ý is the number of students enrolled and x is number of years the school has been The number of students enrolled at a school varies from year to year. For the first eight years the school is open, the number of students enrolled is recorded in the table shown. open. Which shows the residual plot? Students 92 Year 2. 94 100 104 80 4 60 113 131 40 7. 8. 147 176 20 -20 0. 2. 4. 8. Number of Years 3. 56

et X be the independent variable, Y the dependent variable and a be the coefficient of X in a simple linear regression.  Which of the following statements is false     a. If X=demand for a good, Y=its price, then a will be negative     b. If X=strength of a hurricane, Y=damage from the hurricane in dollars, then a will be positive     c. If X=number of hours studied, Y=score on final exam out of 100 points, then a will be positive     d. If X= weight of an automobile, Y=its gas mileage, then a will be negative

Find the regression line associated with the set of points. (Round all coefficients to four decimal places.) (6, 8), (8, 12), (12, 16), (14, 4) y(x) =