Answer:
(A)
Step-by-step explanation:
For finding the correlation coefficient (r), we use the formula
r = \frac{n(\sum xy)-(\sum x\sum y)}{\sqrt{n\sum x^2-(\sum x)^2}\sqrt{n\sum y^2-(\sum y)^2}}
We take x as the month of year and y as the average hour of day light per day
n = 4
We have, ∑x = 42, ∑y = 44.37 ,∑xy = 461.3 ∑x^2 = 446, ∑y^2 = 494
r = [tex]\frac{4(461.3)-(24*44.37)}{\sqrt{4(446)-(42)^2}\sqrt{4(494)-(44.37)^2} }[/tex]
= - 0.993 (approx)
