Question : Calculate the correlation coefficient of the following heights(in inches) of fathers and their sons: X: 65 66 67 67 68 69 70 72 Y: 67 68 65 68 72 72 69 71
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Originally Posted by zorro Question : Calculate the correlation coefficient of the following heights(in inches) of fathers and their sons: X: 65 66 67 67 68 69 70 72 Y: 67 68 65 68 72 72 69 71 Look up you notes (or look at Wikipedia or Google for it) for the correlation coefficient. Then its just arithmetic. If you have any problems let us know what they are and we will help with those specific problems. CB
Originally Posted by CaptainBlack Look up you notes (or look at Wikipedia or Google for it) for the correlation coefficient. Then its just arithmetic. If you have any problems let us know what they are and we will help with those specific problems. CB Correlation Coefficient = = = = = = = = ......I am stuck at this protion now .... I dont know how to calculate the cov of x,y from the table provided ....please advice Also please check if am i doing it correctly or no ....
Last edited by CaptainBlack; December 13th 2009 at 07:36 PM.
Originally Posted by CaptainBlack Look up you notes (or look at Wikipedia or Google for it) for the correlation coefficient. Then its just arithmetic. If you have any problems let us know what they are and we will help with those specific problems. CB This is what i have done Sample Correlation coeff where : Sample mean x,y : Standard deviation for x , y Is this the right formula that i am using??? then Is this answer correct ???
Originally Posted by zorro This is what i have done Sample Correlation coeff where : Sample mean x,y : Standard deviation for x , y Is this the right formula that i am using??? Yes, except the lower limit of summation should be 1, there should ne n terms in the sum if you divide by (n-1) then Is this answer correct ??? I don't think so, something closser to 0.6 would be right. CB
Originally Posted by CaptainBlack [/color] Yes, except the lower limit of summation should be 1, there should ne n terms in the sum if you divide by (n-1) I don't think so, something closser to 0.6 would be right. CB Thank you Captain Black for helping me , You dont know how much But thanks mate for everything
Originally Posted by CaptainBlack [/color] Yes, except the lower limit of summation should be 1, there should ne n terms in the sum if you divide by (n-1) I don't think so, something closser to 0.6 would be right. CB I am using another formulae = .............Is this formulae right =
Originally Posted by zorro I am using another formulae = .............Is this formulae right = That looks about right. CB
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