INTRODUCTION TO ECONOMETRICS II ECO 306 NOUN 38 From column 6 and 7, you can see that Var Sis and Var (Y) is 77.108, therefore,
√
1.3.4.0 SUMMARY This unit briefly introduced correlation coefficient and showed some properties of regression coefficients and hypothesis testing. Four figures and a table were used to further illustrate the correlation coefficient as a measure of linear association and how sample correlation maybe estimated. 1.3.5.0 CONCLUSION The brief discussion on correlation in this unit is to let the students aware that correlation maybe approached as a statistical tool that precedes the basic introduction to econometrics. Although correlation measures maybe clouded by relationships that exist with other variables, figures and table were however used to show correlation as the linear relationships between two variables. 1.3.6.0 TUTOR-MARKED ASSIGNMENT 17 16 12.10 2.75 -2.125 7.563 4.514 -5.842 18 12 5.55 -1.25 -8.675 1.563 75.247 10.843 19 12 7.50 -1.25 -6.725 1.563 45.219 8.406 20 14 8.00 0.75 -6.225 0.563 38.744 -4.668 Total 265 284.49 - - 217.750 1,542.150 305.888 Average 13.250 14.225 - - 10.888 77.108 15.294
