The head of the finance department of Supermarket Company in White Exited, New York City prepared the following table. Values are in thousand pesos.  1.) Plot the Scatter Diagram 2.) Solve and plot for the linear regression equation ( y^= a + bx) on the same graph in a.  b=nΣ xy-(Σ x)(Σ y)/n(Σ x2)-(Σ x)2 a=Σ y-bΣ x/n Sales y Cost Radio Advertising 76 10 85 12 80 11 55 6 57 9

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The head of the finance department of Supermarket Company in White Exited, New York City prepared the following table. Values are in thousand
pesos. 

1.) Plot the Scatter Diagram

2.) Solve and plot for the linear regression equation ( y^= a + bx) on the same graph in a. 

b=nΣ xy-(Σ x)(Σ y)/n(Σ x2)-(Σ x)2

a=Σ y-bΣ x/n

Sales y Cost Radio Advertising
76

10

85 12
80 11
55 6
57 9
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