Non- Linear Correlation:
When the two variables do not change in any constant proportion or ratio, the relationship is said to be Non-Linear.
For example,
If 10% increase in income each time, the expenditure increase by 15%, 10%, 5% or according to need. there should be Non-linear correlation between two variables.
For example,
If the amount of fertilizers is doubled the yield of wheat would not be necessarily be doubled.
