Price Index

A price index is the quotient of the price of a commodity (or commodities combined in some way) in one year divided by the price of the same commodity (commodities) in another year. The goods thus selected form a basket of goods and possibly a service.
The denominator price year is called the base year, and the denominator price year is called the base year.
The meter price is called the current year. The base year is usually denoted by the subscript "o", but the subscript is
'n' is used for the current year. We will adopt
The notation P1om) refers to year-based price index numbers for 'n' years.
“∞”. See PJ99/01 for example
To the 2001 price index with 1999 as the base. An index number is a statistical measure designed to show the change of a variable or group of related variables over time.
Geographic location or other characteristics such as income, occupation, price
A collection of index numbers is sometimes
An index number, called an index series, can also be defined as the percentage change in value, quantity, price, or other relevant variable compared to each item's corresponding number in a selected base year.