CPI is calculated by tracking the change in the prices of a fixed basket of goods and services. The BLS refers to a variety of sources to calculate CPI, including the prices of goods and ...

There are several common ways to compute the percent change in a time series. This section illustrates the use of LAG and DIF functions by showing SAS statements for ...

The Social Security Administration specifically uses the CPI-W, a subset that reflects the purchasing habits of urban wage earners and clerical workers. To calculate the COLA, the Social Security ...