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The following SQL statement contains which type of subquery?
SELECT title,retail,category,cataverage FROM books NATURAL JOIN
(SELECT category,AVG(retail) cataverage FROM books GROUP BY category) ;
GDP Deflator
An economic metric that converts output measured at current prices into constant-dollar GDP to adjust for inflation.
Gini Coefficient
The Gini coefficient is a measure of income inequality within a population, ranging from 0 (perfect equality) to 1 (perfect inequality), used to assess wealth distribution.
Real Interest Rate
The interest rate expressed in dollars of constant purchasing power as a percentage of the amount loaned; the nominal interest rate minus the inflation rate.
Hidden Unemployment
Unemployment that includes individuals who have stopped looking for work or those who are underemployed, not fully reflected in official unemployment statistics.
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