Question

QUESTION 11

1. A Director of Human Resources is exploring employee absenteeism at a Hospital. A multiple linear regression analysis was performed using the following variables. The results are presented below.

   Variable	Description
   Y	number of days absent last fiscal year
   x1	commuting distance (in miles)
   x2	employee's age (in years)
   x3	length of employment at PPP (in years)

   	Coefficients	Standard Error	t Statistic	p-value
   Intercept	6.594146	3.273005	2.014707	0.047671
   x1	-0.18019	0.141949	-1.26939	0.208391
   x2	0.268156	0.260643	1.028828	0.307005
   x3	-2.31068	0.962056	-2.40182	0.018896

   R=0.498191	R2=0.248194	Adj R2=0.192089
   se = 3.553858	n = 73

   Which of the following interpretations is correct?

   	a.	For every additional year in the employee's age, the average number of absent days in the last year significantly (p-value<0.05) increases by 0.27 days.
   	b.	For every additional year in employee’s length of employment, the average number of absent days in the last year significantly (p-value<0.05) decreases by 0.51 days.
   	c.	None of the above is correct.

Answer 1

a)

a.

For every additional year in the employee's age, the average number of absent days in the last year significantly (p-value<0.05) increases by 0.27 days. FALSE (because p value = 0.307 >0.05 )

.	b) For every additional year in employee’s length of employment, the average number of absent days in the last year significantly (p-value<0.05) decreases by 0.51 days. FALSE (because its coefficient is 2.31 not 0.51 )

answer:  None of the above is correct.