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AI for students lesson 23: Design a tiny AI project · Set 291 · 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 collected 180 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  2. 2.🧪 You can plan a simple AI project with… (a) a secret password (b) only a big robot (c) nothing at all (d) paper and examples
  3. 3.📦 Saanvi collected 110 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  4. 4.📋 Planning an AI project: which comes first — try unseen examples or work out the accuracy? (a) try unseen examples (b) work out the accuracy
  5. 5.❌ Diya’s spam spotter was tested on 23 new messages and got 18 right. How many did it get wrong?
  6. 6.📋 Planning an AI project: which comes first — choose what to sort or tag each photo by type? (a) choose what to sort (b) tag each photo by type
  7. 7.📋 Planning an AI project: which comes first — train the model or test on new photos? (a) train the model (b) test on new photos
  8. 8.🎯 Kabir’s recycling sorter was tested on 20 new waste photos and got 10 right. What is its accuracy in percent?
  9. 9.📋 Planning an AI project: which comes first — train the model or collect fruit photos? (a) train the model (b) collect fruit photos
  10. 10.📋 Planning an AI project: which comes first — tag each photo by type or collect fruit photos? (a) tag each photo by type (b) collect fruit photos
  11. 11.📋 Planning an AI project: which comes first — recheck every label or calculate percent right? (a) recheck every label (b) calculate percent right
  12. 12.🧪 Why must you test a model on examples it has NOT seen? (a) to save paper (b) to see if it learned (c) to make it faster (d) to make it bigger
  13. 13.📋 Planning an AI project: which comes first — label each example or fix it and test again? (a) label each example (b) fix it and test again
  14. 14.⚖️ Two spam spotter models were tested on the same 10 messages. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  15. 15.📋 Planning an AI project: which comes first — calculate percent right or try unseen examples? (a) calculate percent right (b) try unseen examples
  16. 16.🎯 Ananya’s leaf identifier is 50% accurate. If it is tested on 10 new leaf photos, how many should it get right?
  17. 17.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) fewer examples (b) a new colour screen (c) a louder speaker (d) more labelled examples
  18. 18.⚖️ Two recycling sorter models were tested on the same 50 waste photos. Model A got 28 right and Model B got 26 right. How many percentage points more accurate is Model A?
  19. 19.⚖️ Two leaf identifier models were tested on the same 20 leaf photos. Model A got 18 right and Model B got 17 right. How many percentage points more accurate is Model A?
  20. 20.🎯 Aarav’s recycling sorter was tested on 20 new waste photos and got 17 right. What is its accuracy in percent?
  21. 21.📋 Planning an AI project: which comes first — try unseen examples or train the model? (a) try unseen examples (b) train the model
  22. 22.📋 Planning an AI project: which comes first — recheck every label or train the model? (a) recheck every label (b) train the model
  23. 23.📋 Planning an AI project: which comes first — work out the accuracy or correct bad labels? (a) work out the accuracy (b) correct bad labels
  24. 24.🧪 What is accuracy? (a) correct ÷ total × 100 (b) correct + total (c) total − correct (d) total × 2
  25. 25.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 23 right and Model B got 21 right. How many percentage points more accurate is Model A?
  26. 26.📋 Planning an AI project: which comes first — choose what to sort or split train and test? (a) choose what to sort (b) split train and test
  27. 27.📋 Planning an AI project: which comes first — choose what to sort or improve data, retest? (a) choose what to sort (b) improve data, retest
  28. 28.📦 Tara collected 180 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  29. 29.🎯 Rohan’s leaf identifier was tested on 4 new leaf photos and got 3 right. What is its accuracy in percent?
  30. 30.❌ Meera’s leaf identifier was tested on 29 new leaf photos and got 20 right. How many did it get wrong?
  31. 31.📦 Ishaan collected 60 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  32. 32.📦 Aarav collected 190 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  33. 33.📋 Planning an AI project: which comes first — test on new photos or fix it and test again? (a) test on new photos (b) fix it and test again
  34. 34.📋 Planning an AI project: which comes first — improve data, retest or test on new photos? (a) improve data, retest (b) test on new photos
  35. 35.📋 Planning an AI project: which comes first — label each example or recheck every label? (a) label each example (b) recheck every label
  36. 36.📋 Planning an AI project: which comes first — work out the accuracy or train the model? (a) work out the accuracy (b) train the model
  37. 37.📋 Planning an AI project: which comes first — fix it and test again or test on new photos? (a) fix it and test again (b) test on new photos
  38. 38.❌ Kabir’s fruit sorter was tested on 50 new fruit photos and got 48 right. How many did it get wrong?
  39. 39.📋 Planning an AI project: which comes first — calculate percent right or split train and test? (a) calculate percent right (b) split train and test
  40. 40.📋 Planning an AI project: which comes first — calculate percent right or fix it and test again? (a) calculate percent right (b) fix it and test again

Answer key

  1. 144
  2. paper and examples
  3. 88
  4. try unseen examples
  5. 5
  6. choose what to sort
  7. train the model
  8. 50
  9. collect fruit photos
  10. collect fruit photos
  11. recheck every label
  12. to see if it learned
  13. label each example
  14. 50
  15. try unseen examples
  16. 5
  17. more labelled examples
  18. 4
  19. 5
  20. 85
  21. train the model
  22. recheck every label
  23. correct bad labels
  24. correct ÷ total × 100
  25. 8
  26. choose what to sort
  27. choose what to sort
  28. 144
  29. 75
  30. 9
  31. 48
  32. 152
  33. test on new photos
  34. test on new photos
  35. label each example
  36. train the model
  37. test on new photos
  38. 2
  39. split train and test
  40. calculate percent right

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