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Mean From Frequency Table

Mean From Frequency Table
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2017-05-24 19:36
Coordinate GeometryProbability & StatisticsGeometric Construction
This example demonstrates how to calculate the mean from a frequency table using GeoGebra. It involves core concepts like frequency tables, mean calculation, and data statistics. Key GeoGebra commands used include Sort, CountIf, Sequence, Sum, Join, Mean, TableText, and Polygon for data processing and visualization. Suitable for middle school mathematics teaching, focusing on data analysis and introductory statistics.

GeoGebra Commands & Parameters

  1. Sort(RemoveUndefined[A2:A1000]) → list1
  2. CountIf(C2 ≤ x < E2, list1) → G2
  3. CountIf(C3 ≤ x < E3, list1) → G3
  4. CountIf(C4 ≤ x < E4, list1) → G4
  5. CountIf(C5 ≤ x < E5, list1) → G5
  6. CountIf(C6 ≤ x < E6, list1) → G6
  7. CountIf(C7 ≤ x < E7, list1) → G7
  8. Sequence(H3, i, 0, G3 - 1) → list3
  9. Sequence(H2, i, 0, G2 - 1) → list2
  10. Sequence(H4, i, 0, G4 - 1) → list4
  11. Sequence(H5, i, 0, G5 - 1) → list5
  12. Sequence(H6, i, 0, G6 - 1) → list6
  13. Sequence(H7, i, 0, G7 - 1) → list7
  14. CountIf(C8 ≤ x < E8, list1) → G8
  15. CountIf(C9 ≤ x < E9, list1) → G9
  16. Sequence(H8, i, 0, G8 - 1) → list8
  17. Sequence(H9, i, 0, G9 - 1) → list9
  18. Sort(RemoveUndefined[A2:A100]) → list1_1
  19. CountIf(C3 < x ≤ E3, list1_1) → G3_1
  20. CountIf(C4 < x ≤ E4, list1_1) → G4_1
  21. CountIf(C2 < x ≤ E2, list1_1) → G2_1
  22. Sort(RemoveUndefined[A2:A100]) → list1_2
  23. CountIf(C3 < x ≤ E3, list1_2) → G3_2
  24. CountIf(C4 < x ≤ E4, list1_2) → G4_2
  25. CountIf(C2 < x ≤ E2, list1_2) → G2_2
  26. Sum(G2:G9) → G10
  27. Sum(K2:K9) → K10
  28. Join({list2, list3, list4, list5, list6, list7, list8, list9}) → list10
  29. Sort(list1) → list11
  30. Mean(list1) → a
  31. TableText({{C1, D1, E1, F1, G1, H1, I1, J1, K1}, {C2, D2, E2, F2, G2, H2, I2, J2, K2}, {C3, D3, E3, F3, G3, H3, I3, J3, K3}, {C4, D4, E4, F4, G4, H4, I4, J4, K4}, {C5, D5, E5, F5, G5, H5, I5, J5, K5}, {C6, D6, E6, F6, G6, H6, I6, J6, K6}, {C7, D7, E7, F7, G7, H7, I7, J7, K7}, {C8, D8, E8, F8, G8, H8, I8, J8, K8}, {C9, D9, E9, F9, G9, H9, I9, J9, K9}, {C10, D10, E10, F10, G10, H10, I10, J10, K10}}, "l_") → text5
  32. Polygon(A, C, D, B) → poly1, a_1, c_1, d, b_1
  33. Polygon(G, H, F, E) → poly2, g, h, f, e_1