5 Replies Latest reply: Apr 25, 2015 8:19 AM by Marco Wedel

# correlation

hello

I have to study the correlation between products

i don't now from where shoud i start anyone has an idea about this subject can help me

thanks a lot

• ###### Re: correlation

In statistics, dependence is any statistical relationship between two random variables or two sets of data. Correlation refers to any of a broad class of statistical relationships involving dependence. Familiar examples of dependent phenomena include the correlation between the physical statures of parents and their offspring, and the correlation between the demand for a product and its price.

Correlations are useful because they can indicate a predictive relationship that can be exploited in practice. For example, an electrical utility may produce less power on a mild day based on the correlation between electricity demand and weather. In this example there is a causal relationship, because extreme weather causes people to use more electricity for heating or cooling; however, statistical dependence is not sufficient to demonstrate the presence of such a causal relationship (i.e., correlation does not imply causation).

• ###### Re: correlation

i should do this between two products in the time

• ###### Re: correlation

no help