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AI for students lesson 23: Design a tiny AI project · Set 535 · 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.📋 Planning an AI project: which comes first — recheck every label or let it learn patterns? (a) recheck every label (b) let it learn patterns
  2. 2.🎯 Vihaan’s spam spotter is 70% accurate. If it is tested on 30 new messages, how many should it get right?
  3. 3.📦 Ananya collected 130 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  4. 4.🎯 Kabir’s fruit sorter was tested on 10 new fruit photos and got 7 right. What is its accuracy in percent?
  5. 5.❌ Saanvi’s leaf identifier was tested on 29 new leaf photos and got 27 right. How many did it get wrong?
  6. 6.⚖️ Two handwriting reader models were tested on the same 10 handwritten letters. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  7. 7.🎯 Vihaan’s handwriting reader is 90% accurate. If it is tested on 80 new handwritten letters, how many should it get right?
  8. 8.🎯 Vihaan’s fruit sorter was tested on 50 new fruit photos and got 35 right. What is its accuracy in percent?
  9. 9.❌ Saanvi’s leaf identifier was tested on 16 new leaf photos and got 15 right. How many did it get wrong?
  10. 10.⚖️ Two recycling sorter models were tested on the same 50 waste photos. Model A got 50 right and Model B got 47 right. How many percentage points more accurate is Model A?
  11. 11.📋 Planning an AI project: which comes first — fix it and test again or split train and test? (a) fix it and test again (b) split train and test
  12. 12.🧪 What is accuracy? (a) total × 2 (b) correct ÷ total × 100 (c) total − correct (d) correct + total
  13. 13.⚖️ Two recycling sorter models were tested on the same 25 waste photos. Model A got 15 right and Model B got 13 right. How many percentage points more accurate is Model A?
  14. 14.⚖️ Two recycling sorter models were tested on the same 10 waste photos. Model A got 7 right and Model B got 6 right. How many percentage points more accurate is Model A?
  15. 15.🧪 You can plan a simple AI project with… (a) only a big robot (b) nothing at all (c) paper and examples (d) a secret password
  16. 16.⚖️ Two handwriting reader models were tested on the same 20 handwritten letters. Model A got 20 right and Model B got 18 right. How many percentage points more accurate is Model A?
  17. 17.🧪 Why must you test a model on examples it has NOT seen? (a) to make it faster (b) to make it bigger (c) to see if it learned (d) to save paper
  18. 18.📦 Diya collected 200 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  19. 19.📋 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
  20. 20.📋 Planning an AI project: which comes first — collect fruit photos or recheck every label? (a) collect fruit photos (b) recheck every label
  21. 21.📦 Nisha collected 40 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  22. 22.⚖️ Two fruit sorter models were tested on the same 50 fruit photos. Model A got 48 right and Model B got 31 right. How many percentage points more accurate is Model A?
  23. 23.📋 Planning an AI project: which comes first — work out the accuracy or train the model? (a) work out the accuracy (b) train the model
  24. 24.❌ Diya’s bird-song app was tested on 49 new bird songs and got 41 right. How many did it get wrong?
  25. 25.📋 Planning an AI project: which comes first — try unseen examples or let it learn patterns? (a) try unseen examples (b) let it learn patterns
  26. 26.🎯 Ishaan’s bird-song app is 50% accurate. If it is tested on 60 new bird songs, how many should it get right?
  27. 27.❌ Kabir’s spam spotter was tested on 14 new messages and got 11 right. How many did it get wrong?
  28. 28.📋 Planning an AI project: which comes first — test on new photos or correct bad labels? (a) test on new photos (b) correct bad labels
  29. 29.📋 Planning an AI project: which comes first — improve data, retest or calculate percent right? (a) improve data, retest (b) calculate percent right
  30. 30.❌ Kabir’s fruit sorter was tested on 18 new fruit photos and got 14 right. How many did it get wrong?
  31. 31.⚖️ Two spam spotter models were tested on the same 10 messages. Model A got 9 right and Model B got 7 right. How many percentage points more accurate is Model A?
  32. 32.📋 Planning an AI project: which comes first — let it learn patterns or gather many examples? (a) let it learn patterns (b) gather many examples
  33. 33.📦 Tara collected 200 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  34. 34.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 22 right and Model B got 16 right. How many percentage points more accurate is Model A?
  35. 35.❌ Ananya’s spam spotter was tested on 22 new messages and got 13 right. How many did it get wrong?
  36. 36.📦 Kabir collected 70 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  37. 37.🎯 Ishaan’s recycling sorter is 90% accurate. If it is tested on 40 new waste photos, how many should it get right?
  38. 38.🎯 Kabir’s fruit sorter was tested on 50 new fruit photos and got 43 right. What is its accuracy in percent?
  39. 39.📦 Nisha collected 190 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  40. 40.🎯 Meera’s handwriting reader is 50% accurate. If it is tested on 40 new handwritten letters, how many should it get right?

Answer key

  1. recheck every label
  2. 21
  3. 104
  4. 70
  5. 2
  6. 50
  7. 72
  8. 70
  9. 1
  10. 6
  11. split train and test
  12. correct ÷ total × 100
  13. 8
  14. 10
  15. paper and examples
  16. 10
  17. to see if it learned
  18. 160
  19. tag each photo by type
  20. collect fruit photos
  21. 32
  22. 34
  23. train the model
  24. 8
  25. let it learn patterns
  26. 30
  27. 3
  28. correct bad labels
  29. calculate percent right
  30. 4
  31. 20
  32. gather many examples
  33. 160
  34. 24
  35. 9
  36. 56
  37. 36
  38. 86
  39. 152
  40. 20

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