, 15.05.2020axelamat70

# A population data set produced the following information. N = 460, ∑x = 3920, ∑y = 2650, ∑x2 = 48,530 ∑xy = 26,570, Find the population regression line.

To multiply or to times
Ithink that's 30240
Regression line is given in the form of: y = a + bx
Where b is the gradient

Working out 'b'

Σxy - [ΣxΣy]/N
Σx² - [Σx]²/N

Working out 'a'

a = [∑y/N] - b[∑x/N]
a = [2650/460] - 0.264[3920/460]
a = 5.86 - 2.25
a = 3.61

Regression line equation is
y = 3.61 + 0.264x

Do you know the answer?

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