Red Cross Error while importing android support V7 lib

The reason is the support lib and the project file are not in the same file disk.

Solution: Try to put the support lib and the android project into the same disk (e.g., C)

Correlation Coefficient in linear regression model

Correlation Coefficient explanation:

http://mathbits.com/MathBits/TISection/Statistics2/correlation.htm

http://maps.unomaha.edu/maher/GEOL2300/week3/week3.html