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pop000
Feb 18, 2011, 11:39 AM
you can see in the picture a scattering diagram that pronounce the connection between two variable.
which of the following answers show the value of the Pearson correlation coefficient between the two different variable?
http://p1cture.me/images/78716217238672225323.jpg
A)
B)
C)
D)
E)
thanks for helping.

Unknown008
Feb 19, 2011, 12:19 AM
Pearson's coefficient of skewness = \frac{3(mean-mode)}{standard\ deviation}

If the mode is to the right, then you have a negative coefficient.

In your diagram, the mode is directly over the mean, meaning that mode = mean... so, the Pearson's Coefficient is ?

pop000
Feb 19, 2011, 03:06 AM
The Pearson's Coefficient is 0 ?
Skewness Because If I look on the Skewness is Equal.
Do I correct ?
Thank you :)!!

Unknown008
Feb 19, 2011, 03:26 AM
Yes, I would think that it's correct.

I didn't do that at school, but since my book also has regression... :)

pop000
Feb 19, 2011, 10:59 AM
:) OK thnaks again