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AI for students lesson 23: Design a tiny AI project · Set 443 · 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.🎯 Kabir’s bird-song app is 50% accurate. If it is tested on 60 new bird songs, how many should it get right?
  2. 2.📦 Ishaan collected 170 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  3. 3.📋 Planning an AI project: which comes first — set aside test photos or tag each photo by type? (a) set aside test photos (b) tag each photo by type
  4. 4.📋 Planning an AI project: which comes first — train the model or test on new photos? (a) train the model (b) test on new photos
  5. 5.⚖️ Two handwriting reader models were tested on the same 10 handwritten letters. Model A got 10 right and Model B got 6 right. How many percentage points more accurate is Model A?
  6. 6.⚖️ Two bird-song app models were tested on the same 10 bird songs. Model A got 7 right and Model B got 5 right. How many percentage points more accurate is Model A?
  7. 7.⚖️ Two leaf identifier models were tested on the same 10 leaf photos. Model A got 10 right and Model B got 6 right. How many percentage points more accurate is Model A?
  8. 8.🧪 Why must you test a model on examples it has NOT seen? (a) to save paper (b) to make it faster (c) to see if it learned (d) to make it bigger
  9. 9.🎯 Ishaan’s leaf identifier was tested on 10 new leaf photos and got 5 right. What is its accuracy in percent?
  10. 10.📋 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
  11. 11.📋 Planning an AI project: which comes first — let it learn patterns or test on new photos? (a) let it learn patterns (b) test on new photos
  12. 12.🎯 Arjun’s handwriting reader is 90% accurate. If it is tested on 20 new handwritten letters, how many should it get right?
  13. 13.⚖️ Two handwriting reader models were tested on the same 50 handwritten letters. Model A got 48 right and Model B got 29 right. How many percentage points more accurate is Model A?
  14. 14.📦 Saanvi collected 50 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  15. 15.🧪 You can plan a simple AI project with… (a) nothing at all (b) only a big robot (c) paper and examples (d) a secret password
  16. 16.📋 Planning an AI project: which comes first — fix it and test again or calculate percent right? (a) fix it and test again (b) calculate percent right
  17. 17.🧪 What is accuracy? (a) correct + total (b) correct ÷ total × 100 (c) total × 2 (d) total − correct
  18. 18.📋 Planning an AI project: which comes first — correct bad labels or label each example? (a) correct bad labels (b) label each example
  19. 19.📦 Aarav collected 80 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  20. 20.🎯 Vihaan’s spam spotter is 90% accurate. If it is tested on 100 new messages, how many should it get right?
  21. 21.🎯 Vihaan’s recycling sorter is 90% accurate. If it is tested on 90 new waste photos, how many should it get right?
  22. 22.🎯 Arjun’s recycling sorter was tested on 10 new waste photos and got 7 right. What is its accuracy in percent?
  23. 23.⚖️ Two handwriting reader models were tested on the same 10 handwritten letters. Model A got 7 right and Model B got 6 right. How many percentage points more accurate is Model A?
  24. 24.❌ Aarav’s fruit sorter was tested on 33 new fruit photos and got 26 right. How many did it get wrong?
  25. 25.🎯 Diya’s leaf identifier is 90% accurate. If it is tested on 20 new leaf photos, how many should it get right?
  26. 26.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) fewer examples (b) a new colour screen (c) more labelled examples (d) a louder speaker
  27. 27.📋 Planning an AI project: which comes first — improve data, retest or work out the accuracy? (a) improve data, retest (b) work out the accuracy
  28. 28.🎯 Rohan’s handwriting reader is 90% accurate. If it is tested on 70 new handwritten letters, how many should it get right?
  29. 29.🎯 Diya’s fruit sorter was tested on 10 new fruit photos and got 5 right. What is its accuracy in percent?
  30. 30.🎯 Arjun’s bird-song app was tested on 5 new bird songs and got 5 right. What is its accuracy in percent?
  31. 31.❌ Aarav’s bird-song app was tested on 32 new bird songs and got 31 right. How many did it get wrong?
  32. 32.🎯 Ishaan’s fruit sorter was tested on 5 new fruit photos and got 3 right. What is its accuracy in percent?
  33. 33.🎯 Diya’s spam spotter is 60% accurate. If it is tested on 30 new messages, how many should it get right?
  34. 34.📋 Planning an AI project: which comes first — let it learn patterns or collect fruit photos? (a) let it learn patterns (b) collect fruit photos
  35. 35.❌ Ishaan’s handwriting reader was tested on 17 new handwritten letters and got 14 right. How many did it get wrong?
  36. 36.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  37. 37.🎯 Vihaan’s recycling sorter was tested on 50 new waste photos and got 43 right. What is its accuracy in percent?
  38. 38.📋 Planning an AI project: which comes first — work out the accuracy or pick a question to solve? (a) work out the accuracy (b) pick a question to solve
  39. 39.📦 Kabir collected 120 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  40. 40.🎯 Aarav’s handwriting reader was tested on 5 new handwritten letters and got 5 right. What is its accuracy in percent?

Answer key

  1. 30
  2. 136
  3. tag each photo by type
  4. train the model
  5. 40
  6. 20
  7. 40
  8. to see if it learned
  9. 50
  10. split train and test
  11. let it learn patterns
  12. 18
  13. 38
  14. 40
  15. paper and examples
  16. calculate percent right
  17. correct ÷ total × 100
  18. label each example
  19. 64
  20. 90
  21. 81
  22. 70
  23. 10
  24. 7
  25. 18
  26. more labelled examples
  27. work out the accuracy
  28. 63
  29. 50
  30. 100
  31. 1
  32. 60
  33. 18
  34. collect fruit photos
  35. 3
  36. 50
  37. 86
  38. pick a question to solve
  39. 96
  40. 100

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