manual dexterity score, X3mental The personnel department of a large manulacturi
ID: 3318452 • Letter: M
Question
manual dexterity score, X3mental The personnel department of a large manulacturing fim selected a random sample of 23 workers. The workers were intervieswed and given several tests. On the basis of the test results, the folowing variables were inivestigated. X2 aptitude score and X4 = personnel assessment score Subsequenly, the workers were observed in order to detenmine the average number of units of work completed (Y) in a given time period for each worker. Regression analysis yielded these results Y--212+ 1.90x2 . 200x3 + 0.25x4 R2-75. (050) (060) (20) Which of the following statements is the correct interpretation of the mental aptitude regression coefticient If we increase mental aptitude by one unit, holding the predictor variables constant, units of work completed will increase by an average of 20. If we increase units of work cormpleted by one unit, holding the other predictor variables constant, the mental aptitude ore will increase by an average of 2.0 . If we increase mental apttude by one unit holding the other predictor vanables constant units of work completed will increase by an average of 6 If we incrcase mental aptitude by onc unit, holding the other predictor variables constant, units of work completed will incrcase by an avcrage of.6 If we increase mental apttude by one unit, units of work completed will increase by an average of 2.0.Explanation / Answer
The correct answer is A) increase in mental aptitude (i.e x3) will increase the output variable by 2 because the coefficient is 2.
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