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标准差表示的离散度

标准差表示的离散度
几何画板及绘图内容加载中，请稍等……
2014-09-30 10:32
概率统计
所属专题 Continuous Random Variables
本示例通过标准差的演示，展示数据集的离散程度。涉及的核心数学概念包括标准差、均值等。使用了Sort、Element、SampleSD、Text、Mean等GeoGebra命令。适合统计学教学和演示。

GeoGebra 命令及参数

  1. Sort({9 * Random[1, a], 8 * Random[1, a], 5 * Random[1, a], 8 * Random[1, a], 5 * Random[1, a], 9 * Random[1, a], 8 * Random[1, a], 9 * Random[1, a], 5 * Random[1, a], 9 * Random[1, a], 8 * Random[1, a], 8 * Random[1, a], 5 * Random[1, a], 2 * Random[1, a], 5 * Random[1, a], 9 * Random[1, a], 5 * Random[1, a], 8 * Random[1, a], 6 * Random[1, a], 9 * Random[1, a], 8 * Random[1, a], 5 * Random[1, a], 9 * Random[1, a], 6 * Random[1, a], 4 * Random[1, a], 3 * Random[1, a], 2 * Random[1, a], 2 * Random[1, a], 2 * Random[1, a], 2 * Random[1, a]}) → list1
  2. Element(list1, 1) → b
  3. SampleSD(list1) → Standard
  4. Element(list1, 30) → d
  5. Text("Standard Deviation:" * c) → text1
  6. Mean(list1) → h
  7. Point(i) → A
  8. Point(i) → B
  9. Segment(A, B) → j
  10. Text("x = " * h) → text2
  11. Histogram({0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90}, list1, false) → g