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Find Regression line sum x=130, sum y=220, sum x^2=2288, sum y^2=8822, sum xy=3467, n=10

Solution:
Your problem `->` Regression line sum x=130, sum y=220, sum x^2=2288, sum y^2=8822, sum xy=3467, n=10


Mean `bar x = (sum x)/n`

`=130/10`

`=13`


Mean `bar y = (sum y)/n`

`=220/10`

`=22`


`byx = (n * sum xy - sum x * sum y)/(n * sum x^2 - (sum x)^2)`

`=(10 * 3467 - 130 * 220 )/(10 * 2288 - (130)^2)`

`=(34670 - 28600 )/(22880 - 16900)`

`=6070/5980`

`=1.0151`


Regression Line y on x
`y - bar y = byx (x - bar x)`

`y - 22 = 1.0151 (x - 13)`






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