式子における文字の意味
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コークスの品質と炉に投入する石炭の揮発分との間には一定の数式的関係があり、例えば：M40=121.07-1.44V、n=10、r=-0.66。ここで、n=10、r=-0.66とはそれぞれ何を意味するのでしょうか？
統計的回帰によって算出されたパラメータで、応用数学のツールを使ったものだろう。意味はない
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