A district wishes to study the relationship between class size (x), and achievement test scores (y). A sample of 15 classrooms from the school district is given in the table below. Class Size, x...

Extracted text: A district wishes to study the relationship between class size (x), and achievement test scores (y). A sample of 15 classrooms from the school district is given in the table below. Class Size, x Score, y x² y2 ху 15 85 17 86 18 84 20 82 21 80 24 78 26 75 29 71 10 92 12 88 30 68 25 76 16 88 14 89 19 82


Extracted text: g) Find the regression equation. m = b = Equation: h) Predict the achievement score when class size is 14. i) Interpret r2 in context of this problem j) Interpret the slope "m" in context of this problem.