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AN INTRODUCTION TO CATEGORICAL DATA ANALYSIS, …

AN INTRODUCTION TO CATEGORICAL data analysis , 2nd ed. SOLUTIONS TO SELECTED PROBLEMS for STA 4504/5503. These solutions are solely for the use of students in STA 4504/5503 and are not to be distributed else- where. Please report any errors in the solutions to Alan Agresti, e-mail copyright 2009, Alan Agresti. Chapter 1. 1. Response variables are (a) Attitude toward gun control, (b) Heart disease, (c) Vote for President, (d). Quality of life. nominal, b. ordinal, c. ordinal, d. nominal, e. nominal, f. ordinal Binomial, n = 100, = p b. The mean is n = 25 and the standard deviation is n (1 ) = 50 correct responses would be surprising, since 50 is z = (50 25) = standard deviations above the mean of a distribution that is approximately normal. Y is binomial for n = 2 and = Thus, Y = 0 with probability , Y = 1 with prob- ability , and Y = 2 with probability The mean is 2( ) = and the standard deviation is p 2( )( ) = b.(i) P (Y = 0) = , P (Y = 1) = , P (Y = 2) =.

AN INTRODUCTION TO CATEGORICAL DATA ANALYSIS, 2nd ed. SOLUTIONS TO SELECTED PROBLEMS for STA 4504/5503 These solutions are solely for the use of students in STA 4504/5503 and are not to be distributed else-where. Please report any errors in the solutions to Alan Agresti, e-mail aa@stat.ufl.edu. copyright 2009, Alan Agresti. Chapter 1 1.

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