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AI for students lesson 23: Design a tiny AI project · Set 360 · 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.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) more labelled examples (b) fewer examples (c) a louder speaker (d) a new colour screen
  2. 2.🎯 Meera’s bird-song app was tested on 5 new bird songs and got 5 right. What is its accuracy in percent?
  3. 3.🎯 Meera’s leaf identifier is 70% accurate. If it is tested on 70 new leaf photos, how many should it get right?
  4. 4.⚖️ Two leaf identifier models were tested on the same 10 leaf photos. Model A got 10 right and Model B got 9 right. How many percentage points more accurate is Model A?
  5. 5.⚖️ Two leaf identifier models were tested on the same 50 leaf photos. Model A got 45 right and Model B got 43 right. How many percentage points more accurate is Model A?
  6. 6.📋 Planning an AI project: which comes first — label each example or test on new photos? (a) label each example (b) test on new photos
  7. 7.🎯 Saanvi’s handwriting reader is 80% accurate. If it is tested on 50 new handwritten letters, how many should it get right?
  8. 8.📋 Planning an AI project: which comes first — improve data, retest or label each example? (a) improve data, retest (b) label each example
  9. 9.🧪 What is accuracy? (a) correct + total (b) correct ÷ total × 100 (c) total − correct (d) total × 2
  10. 10.📦 Aarav collected 150 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  11. 11.🎯 Aarav’s bird-song app was tested on 5 new bird songs and got 5 right. What is its accuracy in percent?
  12. 12.📋 Planning an AI project: which comes first — improve data, retest or split train and test? (a) improve data, retest (b) split train and test
  13. 13.📦 Saanvi collected 40 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  14. 14.⚖️ Two handwriting reader models were tested on the same 20 handwritten letters. Model A got 20 right and Model B got 10 right. How many percentage points more accurate is Model A?
  15. 15.🧪 Why must you test a model on examples it has NOT seen? (a) to save paper (b) to make it bigger (c) to make it faster (d) to see if it learned
  16. 16.🧪 You can plan a simple AI project with… (a) only a big robot (b) nothing at all (c) a secret password (d) paper and examples
  17. 17.⚖️ Two handwriting reader models were tested on the same 20 handwritten letters. Model A got 20 right and Model B got 19 right. How many percentage points more accurate is Model A?
  18. 18.📋 Planning an AI project: which comes first — recheck every label or collect fruit photos? (a) recheck every label (b) collect fruit photos
  19. 19.📋 Planning an AI project: which comes first — work out the accuracy or gather many examples? (a) work out the accuracy (b) gather many examples
  20. 20.📦 Ishaan collected 100 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  21. 21.📦 Arjun collected 160 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  22. 22.⚖️ Two bird-song app models were tested on the same 50 bird songs. Model A got 50 right and Model B got 48 right. How many percentage points more accurate is Model A?
  23. 23.⚖️ 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?
  24. 24.⚖️ Two recycling sorter models were tested on the same 25 waste photos. Model A got 16 right and Model B got 15 right. How many percentage points more accurate is Model A?
  25. 25.⚖️ Two fruit sorter models were tested on the same 20 fruit photos. Model A got 17 right and Model B got 13 right. How many percentage points more accurate is Model A?
  26. 26.❌ Arjun’s recycling sorter was tested on 17 new waste photos and got 14 right. How many did it get wrong?
  27. 27.⚖️ Two bird-song app models were tested on the same 20 bird songs. Model A got 14 right and Model B got 13 right. How many percentage points more accurate is Model A?
  28. 28.📋 Planning an AI project: which comes first — improve data, retest or test on new photos? (a) improve data, retest (b) test on new photos
  29. 29.❌ Tara’s bird-song app was tested on 27 new bird songs and got 25 right. How many did it get wrong?
  30. 30.📋 Planning an AI project: which comes first — split train and test or try unseen examples? (a) split train and test (b) try unseen examples
  31. 31.🎯 Tara’s leaf identifier is 70% accurate. If it is tested on 80 new leaf photos, how many should it get right?
  32. 32.🎯 Rohan’s bird-song app was tested on 25 new bird songs and got 21 right. What is its accuracy in percent?
  33. 33.📋 Planning an AI project: which comes first — recheck every label or label each example? (a) recheck every label (b) label each example
  34. 34.📋 Planning an AI project: which comes first — let it learn patterns or work out the accuracy? (a) let it learn patterns (b) work out the accuracy
  35. 35.📋 Planning an AI project: which comes first — fix it and test again or correct bad labels? (a) fix it and test again (b) correct bad labels
  36. 36.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 22 right and Model B got 19 right. How many percentage points more accurate is Model A?
  37. 37.🎯 Tara’s fruit sorter was tested on 10 new fruit photos and got 5 right. What is its accuracy in percent?
  38. 38.📋 Planning an AI project: which comes first — let it learn patterns or pick a question to solve? (a) let it learn patterns (b) pick a question to solve
  39. 39.📋 Planning an AI project: which comes first — split train and test or recheck every label? (a) split train and test (b) recheck every label
  40. 40.📋 Planning an AI project: which comes first — work out the accuracy or fix it and test again? (a) work out the accuracy (b) fix it and test again

Answer key

  1. more labelled examples
  2. 100
  3. 49
  4. 10
  5. 4
  6. label each example
  7. 40
  8. label each example
  9. correct ÷ total × 100
  10. 120
  11. 100
  12. split train and test
  13. 32
  14. 50
  15. to see if it learned
  16. paper and examples
  17. 5
  18. collect fruit photos
  19. gather many examples
  20. 80
  21. 128
  22. 4
  23. 10
  24. 4
  25. 20
  26. 3
  27. 5
  28. test on new photos
  29. 2
  30. split train and test
  31. 56
  32. 84
  33. label each example
  34. let it learn patterns
  35. correct bad labels
  36. 12
  37. 50
  38. pick a question to solve
  39. recheck every label
  40. work out the accuracy

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