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AI for students lesson 23: Design a tiny AI project · Set 783 · 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.❌ Nisha’s handwriting reader was tested on 31 new handwritten letters and got 27 right. How many did it get wrong?
  2. 2.🎯 Saanvi’s fruit sorter was tested on 20 new fruit photos and got 12 right. What is its accuracy in percent?
  3. 3.📋 Planning an AI project: which comes first — pick a question to solve or tag each photo by type? (a) pick a question to solve (b) tag each photo by type
  4. 4.📦 Kabir collected 200 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  5. 5.🎯 Saanvi’s fruit sorter was tested on 5 new fruit photos and got 5 right. What is its accuracy in percent?
  6. 6.⚖️ Two handwriting reader models were tested on the same 50 handwritten letters. Model A got 39 right and Model B got 33 right. How many percentage points more accurate is Model A?
  7. 7.⚖️ Two fruit sorter models were tested on the same 50 fruit photos. Model A got 48 right and Model B got 37 right. How many percentage points more accurate is Model A?
  8. 8.📦 Meera collected 90 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  9. 9.❌ Arjun’s spam spotter was tested on 20 new messages and got 19 right. How many did it get wrong?
  10. 10.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) more labelled examples (b) a new colour screen (c) a louder speaker (d) fewer examples
  11. 11.🎯 Kabir’s fruit sorter was tested on 4 new fruit photos and got 2 right. What is its accuracy in percent?
  12. 12.🧪 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
  13. 13.🎯 Aarav’s recycling sorter was tested on 5 new waste photos and got 3 right. What is its accuracy in percent?
  14. 14.📋 Planning an AI project: which comes first — recheck every label or train the model? (a) recheck every label (b) train the model
  15. 15.📋 Planning an AI project: which comes first — tag each photo by type or set aside test photos? (a) tag each photo by type (b) set aside test photos
  16. 16.📋 Planning an AI project: which comes first — collect fruit photos or pick a question to solve? (a) collect fruit photos (b) pick a question to solve
  17. 17.❌ Diya’s spam spotter was tested on 22 new messages and got 13 right. How many did it get wrong?
  18. 18.📋 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
  19. 19.🎯 Diya’s handwriting reader is 80% accurate. If it is tested on 100 new handwritten letters, how many should it get right?
  20. 20.⚖️ Two spam spotter models were tested on the same 10 messages. Model A got 9 right and Model B got 6 right. How many percentage points more accurate is Model A?
  21. 21.📦 Nisha collected 70 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  22. 22.📋 Planning an AI project: which comes first — recheck every label or collect fruit photos? (a) recheck every label (b) collect fruit photos
  23. 23.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 10 right and Model B got 8 right. How many percentage points more accurate is Model A?
  24. 24.📋 Planning an AI project: which comes first — pick a question to solve or calculate percent right? (a) pick a question to solve (b) calculate percent right
  25. 25.📋 Planning an AI project: which comes first — improve data, retest or test on new photos? (a) improve data, retest (b) test on new photos
  26. 26.📦 Kabir collected 60 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  27. 27.⚖️ Two spam spotter models were tested on the same 20 messages. Model A got 13 right and Model B got 11 right. How many percentage points more accurate is Model A?
  28. 28.📦 Arjun collected 160 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  29. 29.⚖️ Two recycling sorter models were tested on the same 10 waste photos. Model A got 8 right and Model B got 6 right. How many percentage points more accurate is Model A?
  30. 30.🎯 Diya’s bird-song app is 50% accurate. If it is tested on 40 new bird songs, how many should it get right?
  31. 31.🧪 Why must you test a model on examples it has NOT seen? (a) to see if it learned (b) to save paper (c) to make it bigger (d) to make it faster
  32. 32.🎯 Vihaan’s bird-song app was tested on 25 new bird songs and got 14 right. What is its accuracy in percent?
  33. 33.📋 Planning an AI project: which comes first — collect fruit photos or let it learn patterns? (a) collect fruit photos (b) let it learn patterns
  34. 34.📋 Planning an AI project: which comes first — recheck every label or test on new photos? (a) recheck every label (b) test on new photos
  35. 35.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 10 right and Model B got 9 right. How many percentage points more accurate is Model A?
  36. 36.📋 Planning an AI project: which comes first — try unseen examples or collect fruit photos? (a) try unseen examples (b) collect fruit photos
  37. 37.📋 Planning an AI project: which comes first — recheck every label or gather many examples? (a) recheck every label (b) gather many examples
  38. 38.🎯 Tara’s fruit sorter is 50% accurate. If it is tested on 50 new fruit photos, how many should it get right?
  39. 39.📋 Planning an AI project: which comes first — work out the accuracy or try unseen examples? (a) work out the accuracy (b) try unseen examples
  40. 40.🧪 What is accuracy? (a) correct + total (b) total − correct (c) total × 2 (d) correct ÷ total × 100

Answer key

  1. 4
  2. 60
  3. pick a question to solve
  4. 160
  5. 100
  6. 12
  7. 22
  8. 72
  9. 1
  10. more labelled examples
  11. 50
  12. paper and examples
  13. 60
  14. recheck every label
  15. tag each photo by type
  16. pick a question to solve
  17. 9
  18. pick a question to solve
  19. 80
  20. 30
  21. 56
  22. collect fruit photos
  23. 20
  24. pick a question to solve
  25. test on new photos
  26. 48
  27. 10
  28. 128
  29. 20
  30. 20
  31. to see if it learned
  32. 56
  33. collect fruit photos
  34. recheck every label
  35. 10
  36. collect fruit photos
  37. gather many examples
  38. 25
  39. try unseen examples
  40. correct ÷ total × 100

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