The Producer Price Index (PPI), released monthly by the Bureau of Labor Statistics, measures average changes in selling prices received by domestic producers for their output. Unlike the Consumer ...

Volatility is a statistical measure based on how much an asset’s price moves in either direction and is often used to measure the riskiness of an asset or security. The VIX, which was first ...

The term “sum of squares” is a statistical measure used in regression analysis that quantifies how spread out the data points are around the mean or predicted values. The sum of squares helps ...

Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate This paper provides an overview of statistical measurement issues relating to ...