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keisanHigh-precision calculations for everyday life and work

Laspeyres, Paasche, and Fisher Indices

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Calculates the Laspeyres Index, the Paasche Index, and the Fisher Index.
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Laspeyres Index106.4356436
Paasche Index101.4957265
Fisher Index103.9363409
\( \normalsize p_{c,t}\ :\ the\ price\ of\ c\ in\ period\ {\bf t} \\ \normalsize q_{c,t}\ :\ the\ quantity\ of\ c\ sold\ in\ period\ {\bf t} \\ P_{L}\ =\ \frac{\large\sum (p_{c,t_{n}} \cdot q_{c,t_{0}} )}{\large\sum ( p_{c,t_{0}} \cdot q_{c,t_{0}} )}\ \times\ 100 \\ P_{P}\ =\ \frac{\large\sum (p_{c,t_{n}} \cdot q_{c,t_{n}} )}{\large\sum ( p_{c,t_{0}} \cdot q_{c,t_{n}} )}\ \times\ 100 \\ P_{F}\ =\ \sqrt{P_{L}\cdot P_{P}} \)

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