Let

be the common ratio between terms. Then

Now denote the

th partial sum of the series by

Multiply both sides by

, then subtract from the above to get



As

, you're left with
w-18x world ne the equation
bearing in mind that standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient

The Primary goal of using correlation research is to determine the nature and strength of the association between two measured variables.
Here you must know the terms correlation and variable. The term Correlation is simply defined as the relation between two variables. variables are factors that are liable to vary or change.