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# Concept of correlation - Essay Example

Summary
As per definition, a correlation coefficient must lie between -1 and +1. If the correlation between two variables is high, than the model fits the data well depending…

## Extract of sampleConcept of correlation

An example of a perfectly positive correlation can be supply of good with respect to the price of good. As the price increase, the suppliers tend to supply more of the product.
This graph above shows that the variables are perfectly negatively correlated as an increase in the value of the independent variable causes the value of dependent variable to decrease by the slope of the equation. An example of a perfectly negative correlation can be the demand of good with respect to the price of good. As the price increase, the consumers tend to less of the product.
The correlation between two variables is weak if they are close to zero whether they are negative or positive. GDP and interest rates of the economy are correlated but the magnitude of correlation is very low. On the other side, there might be a strong correlation between smoking and lung cancer.
1) As per the government policy, the federal government subsidizes or gives free school lunches to students whose family income is below a certain level, usually close to the poverty level. So higher the number of eligible students for lunch, higher will be the amount of funding received by the school
WidgeCorp can use this correlation analysis to effectively market its cold drinks in public schools. Since we know that there is a positive correlation between free school lunches and poverty level therefore WidgeCorp can approach the government to offer quality foods at affordable rates. There will be a stiff competition on the basis of price therefore as a case of bulk discounting WidgeCorp should offer quality foods to Government on competitive ... Read More
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