MR chapter 8 from quizzes

Question 1

Concave (U shape) curve where b1 is not sig and b2squ is sig, what does this suggest?

Answer 1

This curve suggests that the relationship between X and Y is purely quadratic. Since the regression coefficient of the quadratic term, b2, is significant, but not the linear term, b1, and since b2 is positive, this means that the curve is a typical U-shaped function. Thus, this curve is the most accurate graphical representation of this result.

Question 2

job satisfaction -> .24 -> absenteeism -> d

path coefficient is…

Answer 2

As there is only one independent variable (Job Satisfaction) and one dependent variable (Absenteeism) in the model, the path coefficient is equivalent to the standardised β weight in a regression, which is also the same as the correlation between the two variables. Therefore, the correlation between Job Satisfaction and Absenteeism is .24