Question

In: Statistics and Probability

The following table shows the average petrol price and the number of online shopping orders over...

The following table shows the average petrol price and the number of online shopping orders over a given month: Petrol Price and Online Shopping Average Petrol Price per gallon over a month ($) Number of Online Shopping Orders

1.57 1,398

4.8225 4,109

2.2725 2,257

3.42 2,644

3.2225 3,257

4.3175 3,530

1.3275 1,791

3.68 3,859

4.3025 3,544

2.065 2,173

The relationship between the average petrol price and the number of online shopping orders in a given month is proposed to follow the simple regression equation below: show variables y^ = b0 + b1x Calculate the percentage of variability in the number of online shopping orders that is not explained by the average petrol price. Give your answer as a percentage to 1 decimal place. Percentage = %

Solutions

Expert Solution

2)

SST=Syy= 77,94,661.60
SSE =Syy-(Sxy)2/Sxx= 883947.7229
SSR =(Sxy)2/Sxx = 69,10,713.88

percentage of variability in the number of online shopping orders that is not explained by the average petrol price

=(SSE/SST)*100 =11.3%


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