Math Problem Statement
Find the least-squares regression line treating the number of absences, x, as the explanatory variable and the final grade, y, as the response variable. ModifyingAbove y with caretequals enter your response herexplusleft parenthesis nothing right parenthesis Number of absences, x Final grade, y 0 87.8 1 84.9 2 81.9 3 79.3 4 76.3 5 71.9 6 62.0 7 66.7 8 63.8 9 60.8
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Linear Regression
Least-Squares Method
Formulas
Least-Squares Regression Line: ŷ = mx + b
Slope Formula: m = [n(Σxy) - (Σx)(Σy)] / [n(Σx^2) - (Σx)^2]
Intercept Formula: b = [Σy - m(Σx)] / n
Theorems
Least-Squares Theorem
Suitable Grade Level
Grades 10-12, College Level