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考公日记 | 资料分析(9):混合增长率和混合平均数你会求了吗

  • 2026-04-04 01:07:18
考公日记 | 资料分析(9):混合增长率和混合平均数你会求了吗

这期我们来谈谈混合增长率和混合平均数，两者都可以用线段法来求解

混合增长率

假设一整体有两个部分1和2，部分的增长率分别是r1和r2，混合增长率是r混，有下面的式子

X是增长量，B为基期量

用线段法求解混合增长率——

坐标点：增长率r

比例关系：基期量B

得到下面式子

混合平均数

假设一整体有两个部分1和2，部分的平均数分别是X1和X2，混合平均数是X混，有下面的式子

如果平均数是人均收入，则分母B为人数；如果平均数是日产量，则分母B为天数

用线段法求解混合平均数——

坐标点：平均数X

比例关系：分母B

得到下面式子

-END-

随便聊聊

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  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000792s ]
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  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000326s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000511s ]
  6. SELECT * FROM `set` [ RunTime:0.000244s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000533s ]
  8. SELECT * FROM `article` WHERE `id` = 459740 LIMIT 1 [ RunTime:0.000506s ]
  9. UPDATE `article` SET `lasttime` = 1775294479 WHERE `id` = 459740 [ RunTime:0.003303s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000254s ]
  11. SELECT * FROM `article` WHERE `id` < 459740 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000512s ]
  12. SELECT * FROM `article` WHERE `id` > 459740 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001293s ]
  13. SELECT * FROM `article` WHERE `id` < 459740 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003314s ]
  14. SELECT * FROM `article` WHERE `id` < 459740 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001327s ]
  15. SELECT * FROM `article` WHERE `id` < 459740 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000727s ]
0.106536s