f98Ky3ac - MSCI 3710 Answer Key for Exam III Versions A and...

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Unformatted text preview: MSCI 3710 Answer Key for Exam III Versions A and C Fall 1998 The numbers are for version A. Corresponding numbers for version C are in parentheses (). 1 (5). Expected value of house type2 in which the household head has a Masters Degree is 17.5 calculated by (53 * 84) / 255. The formula for the expected value is (row total for cell * column total for cell) / overall total. Ans. C (B) 2 (6). Chi-square = ' {( Observed - Expected ) 2 / Expected}. We need to find the Chi-square value for the cell in the third row and second column. First we compute the expected value as (73*85/255) = 24.33. Then the contribution to the Chi-square = {(25 - 24.33) 2 / 24.33} = .0183 Ans. C (E) 3 (7). The given test statistic for Chi-square (27.6) is larger than the critical value (16.9190 using = .05 and df = (4-1)*(4-1) = 9) so we reject Ho, concluding there is evidence of a relationship between house type and the education level of the household head. Ans. A (C) 4 (1). Since we have two different classifications like types of music and job class, Chi-square is 4 (1)....
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f98Ky3ac - MSCI 3710 Answer Key for Exam III Versions A and...

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