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计算均值、中位数和众数

计算均值、中位数和众数
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2016-05-29 17:02
数列概率统计几何作图滑块动画
所属专题 Frequency distribution
这个范例演示了如何计算一组数据的均值、中位数和众数。涉及的核心数学概念包括均值（算术平均数）、中位数（排序后位于中间的数）和众数（出现频率最高的数）。作图要点包括使用 GeoGebra 命令 Sequence（数列生成）、CountIf（计数条件）、TableText（表格文本）、mean（计算均值）、Mode（计算众数）和 Median（计算中位数）等。适合初中及以上学生用于概率统计的学习和练习。

GeoGebra 命令及参数

  1. Sequence(Random[1, 6], t, 1, n) → L
  2. CountIf(x ≟ 1, L) → B4
  3. CountIf(x ≟ 2, L) → B5
  4. CountIf(x ≟ 3, L) → B6
  5. CountIf(x ≟ 4, L) → B7
  6. CountIf(x ≟ 5, L) → B8
  7. CountIf(x ≟ 6, L) → B9
  8. TableText({{A3}, {A4}, {A5}, {A6}, {A7}, {A8}, {A9}}, "l_|h") → texto3
  9. TableText({{A3, B3}, {A4, B4}, {A5, B5}, {A6, B6}, {A7, B7}, {A8, B8}, {A9, B9}, {A10, B10}}, "l_|h") → texto4
  10. TableText({{A3, B3, C3}, {A4, B4, C4}, {A5, B5, C5}, {A6, B6, C6}, {A7, B7, C7}, {A8, B8, C8}, {A9, B9, C9}, {A10, B10, C10}}, "l_|h") → texto5
  11. TableText({{A3, B3, C3, D3}, {A4, B4, C4, D4}, {A5, B5, C5, D5}, {A6, B6, C6, D6}, {A7, B7, C7, D7}, {A8, B8, C8, D8}, {A9, B9, C9, D9}, {A10, B10, C10, D10}}, "l_|h") → texto6
  12. TableText({{A3, B3, C3, D3, E3}, {A4, B4, C4, D4, E4}, {A5, B5, C5, D5, E5}, {A6, B6, C6, D6, E6}, {A7, B7, C7, D7, E7}, {A8, B8, C8, D8, E8}, {A9, B9, C9, D9, E9}, {A10, B10, C10, D10, E10}}, "l_|h") → texto7
  13. TableText({{A3, B3, C3, D3, E3, F3}, {A4, B4, C4, D4, E4, F4}, {A5, B5, C5, D5, E5, F5}, {A6, B6, C6, D6, E6, F6}, {A7, B7, C7, D7, E7, F7}, {A8, B8, C8, D8, E8, F8}, {A9, B9, C9, D9, E9, F9}, {A10, B10, C10, D10, E10, F10}}, "l_|h") → texto8
  14. mean(L) → A13
  15. Mode(L) → A14
  16. Median(L) → A15
  17. CountIf(x ≟ 1, L) → B18
  18. CountIf(x ≟ 2, L) → B19
  19. CountIf(x ≟ 3, L) → B20
  20. CountIf(x ≟ 4, L) → B21
  21. CountIf(x ≟ 5, L) → B22
  22. CountIf(x ≟ 6, L) → B23
  23. TableText({{A17, B17, C17}, {A18, B18, C18}, {A19, B19, C19}, {A20, B20, C20}, {A21, B21, C21}, {A22, B22, C22}, {A23, B23, C23}, {A24, B24, C24}}, "|_lll") → texto14