样本均值与样本标准差的动态演示

GeoGebra 命令及参数

1. Point(Segment[(-15, 1), (15, 1)]) → A
2. Random(-3, 3) → A9
3. Random(-3, 3) → A8
4. Random(-3, 3) → A7
5. Random(-3, 3) → A6
6. Random(-3, 3) → A5
7. Random(-3, 3) → A4
8. Random(-3, 3) → A3
9. Random(-3, 3) → A2
10. Random(-3, 3) → A1
11. Append(Sequence[Random[-3, 3] + a - a, a, 1, Random[5, 10]], x(A)) → list1
12. Sort(list1) → list3
13. SampleSD(list4) → sampledev
14. Mean(list4) → samplemean
15. Segment((samplemean, 0), (samplemean, g(samplemean))) → b
16. Segment((samplemean - sampledev, 0), (samplemean - sampledev, g(samplemean - sampledev))) → c
17. Segment((samplemean + sampledev, 0), (samplemean + sampledev, g(samplemean - sampledev))) → d
18. Point(b) → B
19. Segment((samplemean, (-3)), (samplemean, 0)) → e
20. Segment((samplemean + sampledev, (-3)), (samplemean + sampledev, 0)) → h
21. Point(e) → C
22. Point(h) → D
23. Mirror(h, e) → h'
24. Mirror(D, C) → D'
25. Vector(C, D) → u
26. Vector(D, C) → v
27. Vector(C, D') → w
28. Vector(D', C) → z
29. Midpoint(D', C) → E
30. Midpoint(C, D) → F
31. DotPlot(list4) → list2
32. TableText({list4}, "c|_") → text1