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探索均值与中位数 by Andrew Knauft

探索均值与中位数 by Andrew Knauft
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2017-06-26 11:42
函数
①本范例通过动态坐标点演示均值与中位数的计算与可视化；②涉及核心数学概念包括均值、中位数、统计、直线、假设检验、相关性和对数函数；③作图要点运用了Point, DynamicCoordinates等GeoGebra命令与对象，如点A, D, C, B, E, F, G, H, I, J, K, L及动态坐标对象；④适合高中及以上数学学习者，用于理解数据统计与几何关系。

GeoGebra 命令及参数

  1. Point(xAxis) → A
  2. Point(xAxis) → D
  3. Point(xAxis) → C
  4. Point(xAxis) → B
  5. Point(xAxis) → E
  6. Point(xAxis) → F
  7. Point(xAxis) → G
  8. Point(xAxis) → H
  9. Point(xAxis) → I
  10. Point(xAxis) → J
  11. Point(xAxis) → K
  12. Point(xAxis) → L
  13. DynamicCoordinates(A, x(A), CountIf[x(A) ≟ x(P), P, {B, C, D, E, F, G, H, I, J, K, L}]) → A_d
  14. DynamicCoordinates(B, x(B), CountIf[x(B) ≟ x(P), P, {C, D, E, F, G, H, I, J, K, L}]) → B_d
  15. DynamicCoordinates(C, x(C), CountIf[x(C) ≟ x(P), P, {D, E, F, G, H, I, J, K, L}]) → C_d
  16. DynamicCoordinates(D, x(D), CountIf[x(D) ≟ x(P), P, {E, F, G, H, I, J, K, L}]) → D_d
  17. DynamicCoordinates(E, x(E), CountIf[x(E) ≟ x(P), P, {F, G, H, I, J, K, L}]) → E_d
  18. DynamicCoordinates(F, x(F), CountIf[x(F) ≟ x(P), P, {G, H, I, J, K, L}]) → F_d
  19. DynamicCoordinates(G, x(G), CountIf[x(G) ≟ x(P), P, {H, I, J, K, L}]) → G_d
  20. DynamicCoordinates(H, x(H), CountIf[x(H) ≟ x(P), P, {I, J, K, L}]) → H_d
  21. DynamicCoordinates(I, x(I), CountIf[x(I) ≟ x(P), P, {J, K, L}]) → I_d
  22. DynamicCoordinates(J, x(J), CountIf[x(J) ≟ x(P), P, {K, L}]) → J_d
  23. DynamicCoordinates(K, x(K), CountIf[x(K) ≟ x(P), P, {L}]) → K_d
  24. DynamicCoordinates(L, x(L), 0) → L_d