Quantity estimates

Inflation-adjusted estimates—that is, estimates that exclude the effects of price changes. For individual goods and services, quantity estimates are derived using the deflation method, the quantity extrapolation method, or the direct valuation method. For aggregate series, quantity estimates are based on chain-type quantity indexes, which are also be presented as chained-dollar estimates (see “Chain-type indexes” and “Chained-dollar estimates”).Also referred to as “real” estimates.