Use the following price information for selected items for 2015 and 2022. Production figures for those two periods are also given.
Price
Quantity
Item
2015
2022
2015
2022
Aluminum (cents per pound)
$\ 0.98
$\ 0.94
1,080
1,360
Natural gas $ per million BLA
4.45
3.07
5,080
4,080
Petroleum (barrel)
71.29
58.23
62,000
62,000
Platinum (troy ounce)
1,703.60
1,300.53
540
720
Click here for the Excel Data File
Compute a simple aggregate price index. Use 2015 as the base period.
Note: Round your answer to 1 decimal place.
Simple aggregate price index