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AI for students lesson 23: Design a tiny AI project · Set 914 · 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.⚖️ Two recycling sorter models were tested on the same 10 waste photos. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  2. 2.🎯 Meera’s spam spotter was tested on 50 new messages and got 42 right. What is its accuracy in percent?
  3. 3.🧪 Why must you test a model on examples it has NOT seen? (a) to make it faster (b) to save paper (c) to make it bigger (d) to see if it learned
  4. 4.🧪 What is accuracy? (a) total × 2 (b) correct + total (c) correct ÷ total × 100 (d) total − correct
  5. 5.📋 Planning an AI project: which comes first — set aside test photos or work out the accuracy? (a) set aside test photos (b) work out the accuracy
  6. 6.📦 Meera collected 130 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  7. 7.📋 Planning an AI project: which comes first — label each example or train the model? (a) label each example (b) train the model
  8. 8.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) a new colour screen (b) a louder speaker (c) fewer examples (d) more labelled examples
  9. 9.📋 Planning an AI project: which comes first — try unseen examples or set aside test photos? (a) try unseen examples (b) set aside test photos
  10. 10.⚖️ Two handwriting reader models were tested on the same 10 handwritten letters. Model A got 8 right and Model B got 7 right. How many percentage points more accurate is Model A?
  11. 11.📋 Planning an AI project: which comes first — try unseen examples or gather many examples? (a) try unseen examples (b) gather many examples
  12. 12.❌ Meera’s handwriting reader was tested on 21 new handwritten letters and got 20 right. How many did it get wrong?
  13. 13.📋 Planning an AI project: which comes first — label each example or split train and test? (a) label each example (b) split train and test
  14. 14.📋 Planning an AI project: which comes first — try unseen examples or train the model? (a) try unseen examples (b) train the model
  15. 15.🎯 Ananya’s recycling sorter was tested on 50 new waste photos and got 26 right. What is its accuracy in percent?
  16. 16.📋 Planning an AI project: which comes first — fix it and test again or set aside test photos? (a) fix it and test again (b) set aside test photos
  17. 17.📋 Planning an AI project: which comes first — improve data, retest or let it learn patterns? (a) improve data, retest (b) let it learn patterns
  18. 18.❌ Vihaan’s recycling sorter was tested on 40 new waste photos and got 31 right. How many did it get wrong?
  19. 19.📦 Ishaan collected 160 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
  20. 20.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 24 right and Model B got 18 right. How many percentage points more accurate is Model A?
  21. 21.🧪 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
  22. 22.⚖️ Two leaf identifier models were tested on the same 25 leaf photos. Model A got 23 right and Model B got 21 right. How many percentage points more accurate is Model A?
  23. 23.❌ Meera’s fruit sorter was tested on 21 new fruit photos and got 15 right. How many did it get wrong?
  24. 24.📋 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
  25. 25.📋 Planning an AI project: which comes first — let it learn patterns or try unseen examples? (a) let it learn patterns (b) try unseen examples
  26. 26.⚖️ Two spam spotter models were tested on the same 10 messages. Model A got 7 right and Model B got 5 right. How many percentage points more accurate is Model A?
  27. 27.⚖️ Two leaf identifier models were tested on the same 25 leaf photos. Model A got 21 right and Model B got 18 right. How many percentage points more accurate is Model A?
  28. 28.🎯 Saanvi’s handwriting reader was tested on 50 new handwritten letters and got 41 right. What is its accuracy in percent?
  29. 29.📦 Nisha collected 170 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  30. 30.📋 Planning an AI project: which comes first — split train and test or test on new photos? (a) split train and test (b) test on new photos
  31. 31.⚖️ Two leaf identifier models were tested on the same 50 leaf photos. Model A got 44 right and Model B got 43 right. How many percentage points more accurate is Model A?
  32. 32.❌ Meera’s leaf identifier was tested on 40 new leaf photos and got 38 right. How many did it get wrong?
  33. 33.📋 Planning an AI project: which comes first — train the model or fix it and test again? (a) train the model (b) fix it and test again
  34. 34.📋 Planning an AI project: which comes first — collect fruit photos or fix it and test again? (a) collect fruit photos (b) fix it and test again
  35. 35.📋 Planning an AI project: which comes first — fix it and test again or label each example? (a) fix it and test again (b) label each example
  36. 36.📋 Planning an AI project: which comes first — label each example or collect fruit photos? (a) label each example (b) collect fruit photos
  37. 37.🎯 Vihaan’s fruit sorter was tested on 25 new fruit photos and got 16 right. What is its accuracy in percent?
  38. 38.📋 Planning an AI project: which comes first — let it learn patterns or set aside test photos? (a) let it learn patterns (b) set aside test photos
  39. 39.📋 Planning an AI project: which comes first — try unseen examples or fix it and test again? (a) try unseen examples (b) fix it and test again
  40. 40.🎯 Kabir’s recycling sorter is 50% accurate. If it is tested on 40 new waste photos, how many should it get right?

Answer key

  1. 50
  2. 84
  3. to see if it learned
  4. correct ÷ total × 100
  5. set aside test photos
  6. 104
  7. label each example
  8. more labelled examples
  9. set aside test photos
  10. 10
  11. gather many examples
  12. 1
  13. label each example
  14. train the model
  15. 52
  16. set aside test photos
  17. let it learn patterns
  18. 9
  19. 128
  20. 24
  21. paper and examples
  22. 8
  23. 6
  24. test on new photos
  25. let it learn patterns
  26. 20
  27. 12
  28. 82
  29. 136
  30. split train and test
  31. 2
  32. 2
  33. train the model
  34. collect fruit photos
  35. label each example
  36. collect fruit photos
  37. 64
  38. set aside test photos
  39. try unseen examples
  40. 20

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