不同年级学生宠物偏好调查的列联表与卡方检验演示

GeoGebra 命令及参数

1. Textfield(B3) → bird9
2. Textfield(B4) → bird10
3. Textfield(C3) → cat9
4. Textfield(C4) → cat10
5. Textfield(D3) → dog9
6. Textfield(D4) → dog10
7. Textfield(E3) → fish9
8. Textfield(E4) → fish10
9. Segment(C, D) → b
10. Segment(E, F) → c
11. Segment(G, H) → d
12. Segment(I, J) → e
13. Segment(A, M) → g
14. Segment(N, K) → h
15. Segment(M, K) → i
16. Segment(O, P) → j
17. Segment(Q, R) → k
18. Segment(S, T) → l
19. Segment(B, L) → m
20. Polygon(C, N, K, M) → poly1, n, p, q, r
21. Polygon(C, U, O, A) → GradePoly, s, t, a_1, b_1
22. Segment(A, S) → a
23. Segment(K, T) → f
24. Polygon(S, B, V, D) → poly2, s_1, b_2, v, d_1
25. Polygon(F, A1, W, H) → poly3, f_1, a1, w, h_1
26. Polygon(Z, L, T, J) → poly4, z, l_1, t_1, j_1
27. Vector(A_1, B_1) → u
28. Vector(C_1, D_1) → u_1
29. Vector(E_1, F_1) → v_1
30. Vector(G_1, H_1) → w_1
31. Polygon(I_1, M_1, M, L_1) → Title, c_1, e_1, g_1, i_1