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Suatu studi sosiolog mempelajari distribusi pendapatan dalam masyarakat industri dan berhasil mengumpulkan data yang ditampilkan berikut.
\n$x$ | \n$0$ | \n$0.125$ | \n$0.25$ | \n$0.375$ | \n$0.5$ | \n$0.625$ | \n$0.75$ | \n$0.875$ | \n$1$ | \n
$L(x)$ | \n$0$ | \n$0.0063$ | \n$0.0631$ | \n$0.1418$ | \n$0.2305$ | \n$0.3342$ | \n$0.4713$ | \n$0.6758$ | \n$1$ | \n
Misal $L(x)$ menyatakan bagian dari total pendapatan masyarakat yang diperoleh 100$x$% penerima gaji terendah di masyarakat.
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