{{Short description|Economic measure of a good's price change}}
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In [[economics]], the '''cross elasticity of demand''' (or '''cross-price''') '''elasticity of demand''' measures the percentage changeeffect of thechanges quantityin demandedthe forprice aof one [[Good (economics)|good]] toon the [[Demand|quantity demanded]] of another good. In particular, cross elasticity of demand is a [[ratio]] between the percentage change of the quantity demanded for a good and the percentage change in the [[price]] of another good, [[ceteris paribus]].<ref>{{Cite web|title=OECD Glossary of Statistical Terms – Cross price elasticity of demand Definition|url=https://stats.oecd.org/glossary/detail.asp?ID=3185|access-date=2021-04-17|website=stats.oecd.org}}</ref> In real life, the quantity demanded of good is dependent on not only its own price ([[Price elasticity of demand]]) but also the price of other "related" products. <math display="block">\text{cross-price elasticity of demand}
= \frac{\%\text{ change in quantity demanded of good A}}{\%\text{ change in price of good B}}</math>
