Question

We assume that our wages will increase as we gain experience and become more valuable to our employers. Wages also increase because of inflation. By examining a sample of employees at a given point in time, we can look at part of the picture. How does length of service (LOS) relate to wages? The data here (data81.dat) is the LOS in months and wages for 60 women who work in Indiana banks. Wages are yearly total income divided by the number of weeks worked. We have multiplied wages by a constant for reasons of confidentiality. (a) Plot wages versus LoS. Consider the relationship and whether or not linear regression might be appropriate. (Do this on paper. Your instructor may ask you to turn in this graph.) (b) Find the least-squares line. Summarize the significance test for the slope. What do you conclude? Wages LOS (c) State carefully what the slope tells you about the relationship between wages and length of service. This answer has not been graded yet. (d) Give a 95% confidence interval for the slope.

Answer 1

Ans->Below as the plot f vS Los.

wages 90 70 ee So 50 40 30 20 10 50 100 150

o.61 Ad Sunc ANOVA ey 134. 구40구의 7541 , 62 0S 6.3042 ReNd To Jal 58 127. 귀 59 P-vale 6.693 Los 0,033 0.32 02 6.30 Jage 9.uu ,0333 Los t1.00 6 P-8. 369 15 no gram e-0, 039 0.098