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Coefficient of Correlation Denoted
There are two methods which measure the degree of correlation among two variables these are denoted by R and r.
(a) Coefficient of correlation denoted by r, this gives a measure of the strength of association among two variables one the dependent variable the other the independent variable r can range between -1 and +1 for perfect positive correlation and perfect negative correlation respectively along with zero indicating no relation that is for perfect positive correlation y increase linearly along with x increment.
(b) Rank correlation coefficient denoted by R is utilized to measure association among two sets of ranked or ordered data. R can also vary from +1, perfect positive rank correlation and -1 perfect negative rank correlation whereas O or any type of number near zero representing no correlation.
Y=θ[SIN(INθ)+COS(INθ)],THEN FIND dy÷dθ. Solution) Y=θ[SIN(INθ)+COS(INθ)] applying u.v rule then dy÷dθ={[ SIN(INθ)+COS(INθ) ] dθ÷dθ }+ {θ[ d÷dθ{SIN(INθ)+COS(INθ) ] } => SI
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