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PPPとは?購買力平価を解説
by VT Markets/
Sep 14, 2026
10ドル札を考えてみよう。バンコクではアイスクリームをおよそ10スクープ買えるが、チューリヒでは2スクープしか買えない。同じ紙幣、同じ日、同じ金額でも結果は大きく違う。購買力平価(PPP=Purchasing Power Parity)とは、この差を測るための考え方だ。2つの国で「同じ中身の買い物かご(財・サービスの組み合わせ)」が同じ金額になるような為替レートを求め、場所が変わるとお金で実際にどれだけ買えるかを示す。
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