1. Calculate the weighted averages for two additional used carsusing the weights given in the table below.
| New weights | | Car 4 Ratings | Car 5 Ratings |
Reliability | 5 | | 7 | 6 |
Gas Mileage | 6 | | 5 | 7 |
Interior Features/Comfort | 10 | | 8 | 7 |
Cargo Space | 4 | | 6 | 8 |
Make sure that you fill in each answer area before checking"How Did I Do?".
- Weighted average for Car 4:
- Weighted average for Car 5:
- In your weighted average equations in the problem above, howmany total weights are used?
- For each category, what percent of the total weights arerepresented by the category weights? Enter your answers in thetable.
| New Weights as a Percentage of TotalWeights |
Reliability | % |
Gas Mileage | % |
Interior Features/Comfort | % |
Cargo Space | % |
- In the tables below, multiply each category’s percentage weightby its rating, and add up the four amounts.
| Percentage Weights (written as a decimal) | | Car 4 Ratings | | |
Reliability | | × | 7 | = | |
Gas Mileage | | × | 5 | = | |
Interior Features/Comfort | | × | 8 | = | |
Cargo Space | | × | 6 | = | |
Total | | |
| Percentage Weights (written as a decimal) | | Car 5 Ratings | | |
Reliability | | × | 6 | = | |
Gas Mileage | | × | 7 | = | |
Interior Features/Comfort | | × | 7 | = | |
Cargo Space | | × | 8 | = | |
Total | | |
- Write an equation for the weighted average using the percentageweights as decimals. Use the following variables to represent theindividual rating in each category: R= Reliability; G= Gas Mileage;I= Interior Features/Comfort; C= Cargo Space.
Weighted average =
