Calculate the correlation cofficient beteen X and Y and comment on their relationship .

Explanation

`r=(sumdxdy-((sumdx)xx(sumdy))/(N))/(sqrt(sumdx^(2)-((sumdx)^(2))/(N)xxsqrt(sumsy^(2)-((sumdy)^(2))/(N))`
`r=(68-((-2)xx(-4))/(6))/(sqrt(34-((-2)^(2))/(6))xxsqrt(136xx((-4)^(2))/(6))`
`(68-(8)/(6))/(sqrt(34-(4)/(6))xxsqrt(136-(16)/(6)))`
`=((408-8)/(6))/(sqrt((204-4)/(6))xxsqrt((816-16)/(6)))`
`=((400)/(6))/(sqrt((200)/(6))xxsqrt((800)/(6)))`
`((400)/(6))/((1)/(6)sqrt(200xx800))`
`(400)/(6)xx(6)/(1)xx(1)/(sqrt(1,60,000))`
`(400)/(400)=1`
Correlation coefficient (r)=1
This is a situation of a perfectly positive correlation between X and Y.