C10. In Exercise 6, we examined the relationship between years of education and hours oftelevision watched per day. We saw that as education increases, hours of televisionviewing decreases. The number of children a family has could also affect howmuch television is viewed per day. Having children may lead to more shared andsupervised viewing and thus increases the number of viewing hours. The followingSPSS output displays the relationship between television viewing (measured inhours per day) and both education (measured in years) and number of children. Wehypothesize that whereas more education may lead to less viewing, the number ofchildren has the opposite effect: Having more children will result in more hours ofviewing per day.a. What is the b coefficient for education? For number of children? Interpret eachcoefficient. Is the relationship between each independent variable and hours ofviewing as hypothesized?b. Using the multiple regression equation with both education and number of childrenas independent variables, calculate the number of hours of television viewing for a person with 16 years of education and two children. Using the equation fromExercise 6, how do the results compare between a person with 16 years of education(number of children not included in the equation) and a person with 16 years ofeducation with two children?c. Compare the r value from Exercise 6 with the R value from this regression. Doesusing education and number of children jointly reduce the amount of error involvedin predicting hours of television viewed per day?Multiple Regression Output Specifying the Relationship Between Education,Number of Children, and Hours Spent per Day Watching TelevisionModel SummaryAdjusted RSquareStd. Error ofthe EstimateModelRR Square.213.046.0433.173a. Predictors: (Constant), Number of children, Highestyear of school completedANOVASum ofSquaresModeldfMean SquareSig.Regression351.1462.175.57317.439.000Residual7359.54273110.068Total7710.688733a. Dependent Variable: Hours per day watching TVb. Predictors: (Constant), Number of children, Highest year of school completedCoefficientsaStandardizedCoefficientsUnstandardized CoefficientsModelStd. ErrorBeta1.(Constant)Sig.5.596.5939.438.000Highest year of schoolcompleted-.201.039-.190-5.105.000Number of children.118a. Dependent Variable: Hours per day watching TV.071.0621.657.098

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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