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AI for students lesson 23: Design a tiny AI project · Set 184 · 40 questions
TalentJR

AI tip (Accuracy = correct ÷ total × 100): Steps: 1 choose a problem → 2 collect examples → 3 label them → 4 check and correct bad labels (clean the data) → 5 split into training and test sets → 6 train → 7 test with new examples → 8 measure accuracy → 9 improve the data and retest. Accuracy = correct ÷ total × 100. Wrong = total − correct. Expected right = accuracy ÷ 100 × total. Keep some examples apart for testing (for example one fifth); the rest are for training.

NameDateTime takenScore ___ / 40
  1. 1.📦 Ananya collected 140 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  2. 2.📋 Planning an AI project: which comes first — train the model or set aside test photos? (a) train the model (b) set aside test photos
  3. 3.📋 Planning an AI project: which comes first — improve data, retest or pick a question to solve? (a) improve data, retest (b) pick a question to solve
  4. 4.⚖️ Two bird-song app models were tested on the same 50 bird songs. Model A got 46 right and Model B got 45 right. How many percentage points more accurate is Model A?
  5. 5.📋 Planning an AI project: which comes first — calculate percent right or try unseen examples? (a) calculate percent right (b) try unseen examples
  6. 6.📦 Saanvi collected 160 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  7. 7.🎯 Rohan’s leaf identifier is 80% accurate. If it is tested on 100 new leaf photos, how many should it get right?
  8. 8.🎯 Tara’s fruit sorter was tested on 5 new fruit photos and got 4 right. What is its accuracy in percent?
  9. 9.📋 Planning an AI project: which comes first — test on new photos or train the model? (a) test on new photos (b) train the model
  10. 10.🎯 Nisha’s leaf identifier is 60% accurate. If it is tested on 60 new leaf photos, how many should it get right?
  11. 11.📋 Planning an AI project: which comes first — choose what to sort or correct bad labels? (a) choose what to sort (b) correct bad labels
  12. 12.📦 Diya collected 110 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  13. 13.📦 Ananya collected 130 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
  14. 14.🎯 Meera’s handwriting reader was tested on 50 new handwritten letters and got 50 right. What is its accuracy in percent?
  15. 15.❌ Ishaan’s bird-song app was tested on 38 new bird songs and got 29 right. How many did it get wrong?
  16. 16.📋 Planning an AI project: which comes first — try unseen examples or train the model? (a) try unseen examples (b) train the model
  17. 17.❌ Diya’s recycling sorter was tested on 39 new waste photos and got 30 right. How many did it get wrong?
  18. 18.⚖️ Two fruit sorter models were tested on the same 50 fruit photos. Model A got 45 right and Model B got 29 right. How many percentage points more accurate is Model A?
  19. 19.🧪 You can plan a simple AI project with… (a) only a big robot (b) a secret password (c) nothing at all (d) paper and examples
  20. 20.⚖️ Two leaf identifier models were tested on the same 50 leaf photos. Model A got 47 right and Model B got 29 right. How many percentage points more accurate is Model A?
  21. 21.📋 Planning an AI project: which comes first — work out the accuracy or improve data, retest? (a) work out the accuracy (b) improve data, retest
  22. 22.⚖️ Two bird-song app models were tested on the same 25 bird songs. Model A got 19 right and Model B got 16 right. How many percentage points more accurate is Model A?
  23. 23.📋 Planning an AI project: which comes first — correct bad labels or try unseen examples? (a) correct bad labels (b) try unseen examples
  24. 24.📦 Meera collected 110 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  25. 25.🧪 What is accuracy? (a) total × 2 (b) total − correct (c) correct ÷ total × 100 (d) correct + total
  26. 26.📋 Planning an AI project: which comes first — let it learn patterns or split train and test? (a) let it learn patterns (b) split train and test
  27. 27.🎯 Meera’s leaf identifier is 80% accurate. If it is tested on 90 new leaf photos, how many should it get right?
  28. 28.🎯 Tara’s spam spotter was tested on 25 new messages and got 14 right. What is its accuracy in percent?
  29. 29.📋 Planning an AI project: which comes first — label each example or train the model? (a) label each example (b) train the model
  30. 30.📦 Rohan collected 190 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
  31. 31.❌ Meera’s handwriting reader was tested on 28 new handwritten letters and got 21 right. How many did it get wrong?
  32. 32.📋 Planning an AI project: which comes first — train the model or tag each photo by type? (a) train the model (b) tag each photo by type
  33. 33.📋 Planning an AI project: which comes first — test on new photos or improve data, retest? (a) test on new photos (b) improve data, retest
  34. 34.🧪 Why must you test a model on examples it has NOT seen? (a) to save paper (b) to make it bigger (c) to make it faster (d) to see if it learned
  35. 35.📋 Planning an AI project: which comes first — improve data, retest or train the model? (a) improve data, retest (b) train the model
  36. 36.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) a louder speaker (b) a new colour screen (c) fewer examples (d) more labelled examples
  37. 37.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 7 right and Model B got 6 right. How many percentage points more accurate is Model A?
  38. 38.📋 Planning an AI project: which comes first — choose what to sort or let it learn patterns? (a) choose what to sort (b) let it learn patterns
  39. 39.📋 Planning an AI project: which comes first — choose what to sort or calculate percent right? (a) choose what to sort (b) calculate percent right
  40. 40.📋 Planning an AI project: which comes first — gather many examples or choose what to sort? (a) gather many examples (b) choose what to sort

Answer key

  1. 112
  2. set aside test photos
  3. pick a question to solve
  4. 2
  5. try unseen examples
  6. 128
  7. 80
  8. 80
  9. train the model
  10. 36
  11. choose what to sort
  12. 88
  13. 104
  14. 100
  15. 9
  16. train the model
  17. 9
  18. 32
  19. paper and examples
  20. 36
  21. work out the accuracy
  22. 12
  23. correct bad labels
  24. 88
  25. correct ÷ total × 100
  26. split train and test
  27. 72
  28. 56
  29. label each example
  30. 152
  31. 7
  32. tag each photo by type
  33. test on new photos
  34. to see if it learned
  35. train the model
  36. more labelled examples
  37. 10
  38. choose what to sort
  39. choose what to sort
  40. choose what to sort

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