INTRODUCTION TO ECONOMETRICS II
ECO 306
NOUN
39 1.) Demonstrate that, in general the sample correlation coefficient is not affected by a change inthe unit of measurement of one of the variables.
2.) Suppose that the observations on two variables X and Y lie on a straight line
Demonstrate that
( ) ( ) and that Var(Y) =
( ) and hence that the sample correlation coefficient is equal to 1 if the slope of the line is positive, –1 if it is negative.
1.3.7.0 REFERENCES FURTHER READING
Maddala, GS, &Lahiri, K. (1992).Introduction to econometrics (Vol. 2). New York
Macmillan.Dougherty, C. (2007).Introduction to econometrics. Oxford University Press, USA. Stock, J. H, & Watson, MW. (2015).Introduction to econometrics. Pearson.
Dougherty, C. (2014). Elements of econometrics.London: University of London.
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