A large discount department store chain advertises on television (X₁), and on the radio (X2). A sample of 12 of its stores in the certain area showed expenditures and revenues during a given month. All figures are in thousands of dollars. The dataset is summarised below. Television advertising X'X= X'Y: 12 115 1191| 647 6393 Radio advertising Television & Radio advertising X'X = X'Y = 12 0.109897957 68 410 (X'X)¹ = -0.001810563 647 3868 0.000189003 -0.001625893 -0.00000012663 0.000287136 Y'Y=39973 and b = -10.11045936 1.956197151 and Σ X, X, = 654 7.990629999
A large discount department store chain advertises on television (X₁), and on the radio (X2). A sample of 12 of its stores in the certain area showed expenditures and revenues during a given month. All figures are in thousands of dollars. The dataset is summarised below. Television advertising X'X= X'Y: 12 115 1191| 647 6393 Radio advertising Television & Radio advertising X'X = X'Y = 12 0.109897957 68 410 (X'X)¹ = -0.001810563 647 3868 0.000189003 -0.001625893 -0.00000012663 0.000287136 Y'Y=39973 and b = -10.11045936 1.956197151 and Σ X, X, = 654 7.990629999
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 4CA
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