Given the sample of returns of the Top Black Asphalt Company and the S&P 500 index,calculate Top Black's covariance and beta. 
Definitions:
Proportional
Being proportional means two quantities maintain a constant ratio or relationship relative to one another, exemplified by the equation \(y = kx\), where \(k\) is the constant of proportionality.
Length
The measurement of something from end to end or the extent of something along its greatest dimension.
X
Often used to represent an unknown quantity or variable in mathematical equations and expressions.
Markup Rate
The percentage increase on the cost price of goods to achieve the selling price.
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