Restricting range when a correlation is nonlinear can make p

Restricting range when a correlation is non-linear can make positive correlations appear negative. True or False. I have answered False

Solution

Your answer \"False\" is right.

You might be very familiar with these. However, let me just quote them again:

Correlation is said to be linear if the ratio of change is constant and is said to be non-linear if the ration of change is not constant.

A positive correlation is a relationship between two variables where if one variable increases, the other one also increases. A positive correlation also exists in one decreases and the other also decreases.

A negative correlation is a relationship between two variables such that as the value of one variable increases, the other decreases.

Irrespective of whether you are having exponential regression or quadratic regression, it is enough to look at the scatter curve to ascertain the fact that if you restrict the range for this non-linear correlation, positive correlation will appear positive and the negative will appear negative and not otherwise.