The following data was collected comparing car prices and quantity sold (thousands) . 
Compute the simple aggregate index to compare car prices in 2010 to 2000.
Definitions:
Statistical Analyses
The process of applying statistical techniques to describe, explore, and infer relationships within data.
17th Century
The period in history spanning from 1601 to 1700, often noted for major developments in science, mathematics, and philosophy.
Inferential Statistics
A branch of statistics that uses a sample of data to make inferences or predictions about a population.
Average
A statistical measure obtained by dividing the sum of values by the number of values.
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