In: Statistics and Probability
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 = %
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%