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编制物价指数的人,没有不知道拉氏公式的.世界各国编制消费物价指数,几乎都用拉氏公式．这个公式的首创者就是19世纪著名统计学家拉斯佩雷斯.
The people who compiled the price index did not know the formula of La’s .In the world, the consumer price index was compiled almost always by the Lagrange formula. The founder of this formula is the famous 19th century statistician Laspeyres.