Ch4.WS - value of X? Explain. (c) Does r change if you...

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#1 • Calculate  the  correlatio coefficien t,  r , for  each of  the  following  bivariate  data. X Y 1 6 2 7 3 5 4 4 5 3 6 1 7 2 X Y 1 7 2 6 3 5 4 4 5 3 6 2 7 1 X Y 1 2 2 1 3 4 4 3 5 7 6 5 7 6
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#2 • Calculate the correlation  coefficient for the data on  the right. • (a) Does  r  change if you add  3 to each value of Y?  Explain. • (b) What if you double the 
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Unformatted text preview: value of X? Explain. (c) Does r change if you interchange the last 2 values of Y (5 and 6)? Explain. (d) If you switch X and Y, does r change? Explain. X Y 1 2 2 3 3 1 4 5 5 6...
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This note was uploaded on 03/14/2010 for the course ECON Statistics taught by Professor Yy during the Spring '10 term at Seoul National.

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Ch4.WS - value of X? Explain. (c) Does r change if you...

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