线性回归：拖拽点或输入数据拟合直线

GeoGebra 命令及参数

1. Line(U, V) → line_{guess}
2. Line(A, x = 0) → a
3. Line(B, x = 0) → b
4. Line(C, x = 0) → c
5. Line(D, x = 0) → d
6. Line(E, x = 0) → e
7. Line(F, x = 0) → f
8. Line(G, x = 0) → g
9. Line(H, x = 0) → h
10. Line(I, x = 0) → i
11. Line(J, x = 0) → j
12. Line(K, x = 0) → k
13. Line(L, x = 0) → l
14. Line(M, x = 0) → m
15. Line(N, x = 0) → n
16. Line(NP, x = 0) → np
17. Line(O, x = 0) → p
18. Line(P, x = 0) → q
19. Line(R, x = 0) → s
20. Line(S, x = 0) → t
21. Intersect(line_{guess}, a) → A'
22. Intersect(line_{guess}, b) → B'
23. Intersect(line_{guess}, c) → C'
24. Intersect(line_{guess}, d) → D'
25. Intersect(line_{guess}, e) → E'
26. Intersect(line_{guess}, f) → F'
27. Intersect(line_{guess}, g) → G'
28. Intersect(line_{guess}, h) → H'
29. Intersect(line_{guess}, i) → I'
30. Intersect(line_{guess}, j) → J'
31. Intersect(line_{guess}, k) → K'
32. Intersect(line_{guess}, l) → L'
33. Intersect(line_{guess}, m) → M'
34. Intersect(line_{guess}, n) → N'
35. Intersect(line_{guess}, np) → NP'
36. Intersect(line_{guess}, p) → O'
37. Intersect(line_{guess}, q) → P'
38. Intersect(line_{guess}, s) → R'
39. Intersect(line_{guess}, t) → S'
40. Line(Q, x = 0) → r
41. Intersect(line_{guess}, r) → Q'
42. Polygon(A', A, 4) → poly1, a_1, b_1, c_1, d_1, T, W
43. Polygon(B', B, 4) → poly2, e_1, f_1, g_1, h_1, Z, A_1
44. Polygon(D', D, 4) → poly3, i_1, j_1, k_1, l_1, B_1, C_1
45. Polygon(E', E, 4) → poly4, m_1, n_1, p_1, q_1, D_1, E_1
46. Polygon(C', C, 4) → poly5, r_1, s_1, t_1, a_2, F_1, G_1
47. Polygon(F', F, 4) → poly6, b_2, c_2, d_2, e_2, H_1, I_1
48. Polygon(G', G, 4) → poly7, f_2, g_2, h_2, i_2, J_1, K_1
49. Polygon(H', H, 4) → poly8, j_2, k_2, l_2, m_2, L_1, M_1
50. Polygon(I', I, 4) → poly9, n_2, p_2, q_2, r_2, N_1, O_1
51. Polygon(J', J, 4) → poly10, s_2, t_2, a_3, b_3, P_1, Q_1
52. Polygon(K', K, 4) → poly11, c_3, d_3, e_3, f_3, R_1, S_1
53. Polygon(L', L, 4) → poly12, g_3, h_3, i_3, j_3, T_1, U_1
54. Polygon(M', M, 4) → poly13, k_3, l_3, m_3, n_3, V_1, W_1
55. Polygon(N', N, 4) → poly14, p_3, q_3, r_3, s_3, Z_1, A_2
56. Polygon(NP', NP, 4) → poly15, t_3, a_4, b_4, c_4, B_2, C_2
57. Polygon(P', P, 4) → poly16, d_4, e_4, f_4, g_4, D_2, E_2
58. Polygon(O', O, 4) → poly17, h_4, i_4, j_4, k_4, F_2, G_2
59. Polygon(Q', Q, 4) → poly18, l_4, m_4, n_4, p_4, H_2, I_2
60. Polygon(R', R, 4) → poly19, q_4, r_4, s_4, t_4, J_2, K_2
61. Polygon(S', S, 4) → poly20, a_5, b_5, c_5, d_5, L_2, M_2
62. Vector((x(A), 0), (x(A), y(A) - y(A'))) → V_A
63. Vector((x(B), 0), (x(B), y(B) - y(B'))) → V_B
64. Vector((x(C), 0), (x(C), y(C) - y(C'))) → V_C
65. Vector((x(D), 0), (x(D), y(D) - y(D'))) → V_D
66. Vector((x(E), 0), (x(E), y(E) - y(E'))) → V_E
67. Vector((x(F), 0), (x(F), y(F) - y(F'))) → V_F
68. Vector((x(G), 0), (x(G), y(G) - y(G'))) → V_G
69. Vector((x(H), 0), (x(H), y(H) - y(H'))) → V_H
70. Vector((x(I), 0), (x(I), y(I) - y(I'))) → V_I
71. Vector((x(J), 0), (x(J), y(J) - y(J'))) → V_J
72. Vector((x(K), 0), (x(K), y(K) - y(K'))) → V_K
73. Vector((x(L), 0), (x(L), y(L) - y(L'))) → V_L
74. Vector((x(M), 0), (x(M), y(M) - y(M'))) → V_M
75. Vector((x(N), 0), (x(N), y(N) - y(N'))) → V_N
76. Vector((x(NP), 0), (x(NP), y(NP) - y(NP'))) → V_{NP}
77. Vector((x(P), 0), (x(P), y(P) - y(P'))) → V_P
78. Vector((x(Q), 0), (x(Q), y(Q) - y(Q'))) → V_Q
79. Vector((x(R), 0), (x(R), y(R) - y(R'))) → V_R
80. Vector((x(O), 0), (x(O), y(O) - y(O'))) → V_O
81. Vector((x(S), 0), (x(S), y(S) - y(S'))) → V_S
82. RSquare(data, line_{guess}) → Strength
83. SampleSD(list_y) → SD_y
84. Median(list_x) → Median_x
85. Vector((Median_x / 2, (SD_y * 2)), (Median_x / 2, (SD_y * 2) + over)) → Vector_{over}
86. Vector((Median_x / 2, (SD_y * 2)), (Median_x / 2, (SD_y * 2) - under)) → Vector_{under}
87. Text(((Strength * 100) * "%"), ((Median_x * 1.425), (SD_y * 1.95))) → text1
88. FitLineY(data) → line_{actual}
89. Circle(((Median_x * 1.5), (2 * SD_y)), (Strength * Max[list_y] / 6)) → g_5
90. Circle(((Median_x * 1.5), (2 * SD_y)), (Strength * Max[list_y] / 6)) → CorrelationCircle
91. Circle(((Median_x * 1.5), (2 * SD_y)), (Strength * Max[list_y] / 6)) → CorrelationCircle_1
92. Circle(((Median_x * 1.5), (2 * SD_y)), (Strength * Max[list_y] / 6)) → f_5