How is the consumer price index quality controlled?
Answer:
The government conducts surveys from time to time to measure what people are actually spending money on (the sample is scientifically selected and the people sampled keep an exact spending diary for two weeks), and then the statisticians re-weight the index each January to give a true reflection of spending patterns.
They try to compensate also for under-reporting of spending on booze an ciggies.
the CPI is not controlled by a government agency. however the population and money does have an effect on it going up or down.with Christmas just around the corner people will buy presents and the more they purchase the higher the index will rise.if it is a slow season it will drop.
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