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AI for students lesson 23: Design a tiny AI project · Set 484 · 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.🧪 What is accuracy? (a) correct ÷ total × 100 (b) total × 2 (c) total − correct (d) correct + total
  2. 2.🎯 Ananya’s spam spotter is 80% accurate. If it is tested on 80 new messages, how many should it get right?
  3. 3.🎯 Diya’s fruit sorter was tested on 5 new fruit photos and got 4 right. What is its accuracy in percent?
  4. 4.🧪 Why must you test a model on examples it has NOT seen? (a) to make it bigger (b) to see if it learned (c) to make it faster (d) to save paper
  5. 5.🎯 Aarav’s spam spotter was tested on 4 new messages and got 2 right. What is its accuracy in percent?
  6. 6.❌ Nisha’s bird-song app was tested on 41 new bird songs and got 32 right. How many did it get wrong?
  7. 7.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) fewer examples (b) a louder speaker (c) more labelled examples (d) a new colour screen
  8. 8.🧪 You can plan a simple AI project with… (a) only a big robot (b) nothing at all (c) paper and examples (d) a secret password
  9. 9.⚖️ Two recycling sorter models were tested on the same 10 waste photos. Model A got 9 right and Model B got 8 right. How many percentage points more accurate is Model A?
  10. 10.🎯 Ananya’s fruit sorter was tested on 20 new fruit photos and got 17 right. What is its accuracy in percent?
  11. 11.📋 Planning an AI project: which comes first — recheck every label or let it learn patterns? (a) recheck every label (b) let it learn patterns
  12. 12.🎯 Rohan’s recycling sorter is 60% accurate. If it is tested on 90 new waste photos, how many should it get right?
  13. 13.🎯 Vihaan’s fruit sorter was tested on 5 new fruit photos and got 4 right. What is its accuracy in percent?
  14. 14.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 25 right and Model B got 20 right. How many percentage points more accurate is Model A?
  15. 15.📋 Planning an AI project: which comes first — tag each photo by type or improve data, retest? (a) tag each photo by type (b) improve data, retest
  16. 16.❌ Arjun’s leaf identifier was tested on 41 new leaf photos and got 33 right. How many did it get wrong?
  17. 17.📦 Tara collected 190 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  18. 18.📦 Kabir collected 80 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  19. 19.📦 Nisha collected 120 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  20. 20.📋 Planning an AI project: which comes first — let it learn patterns or calculate percent right? (a) let it learn patterns (b) calculate percent right
  21. 21.🎯 Vihaan’s leaf identifier is 60% accurate. If it is tested on 20 new leaf photos, how many should it get right?
  22. 22.🎯 Vihaan’s fruit sorter is 60% accurate. If it is tested on 80 new fruit photos, how many should it get right?
  23. 23.🎯 Tara’s fruit sorter is 90% accurate. If it is tested on 30 new fruit photos, how many should it get right?
  24. 24.⚖️ Two bird-song app models were tested on the same 10 bird songs. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  25. 25.🎯 Aarav’s bird-song app was tested on 5 new bird songs and got 4 right. What is its accuracy in percent?
  26. 26.⚖️ Two fruit sorter models were tested on the same 25 fruit photos. Model A got 25 right and Model B got 24 right. How many percentage points more accurate is Model A?
  27. 27.📋 Planning an AI project: which comes first — gather many examples or calculate percent right? (a) gather many examples (b) calculate percent right
  28. 28.📋 Planning an AI project: which comes first — choose what to sort or work out the accuracy? (a) choose what to sort (b) work out the accuracy
  29. 29.📋 Planning an AI project: which comes first — try unseen examples or correct bad labels? (a) try unseen examples (b) correct bad labels
  30. 30.📋 Planning an AI project: which comes first — recheck every label or test on new photos? (a) recheck every label (b) test on new photos
  31. 31.📋 Planning an AI project: which comes first — choose what to sort or set aside test photos? (a) choose what to sort (b) set aside test photos
  32. 32.🎯 Meera’s handwriting reader was tested on 20 new handwritten letters and got 17 right. What is its accuracy in percent?
  33. 33.📋 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
  34. 34.❌ Kabir’s fruit sorter was tested on 49 new fruit photos and got 43 right. How many did it get wrong?
  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 — set aside test photos or train the model? (a) set aside test photos (b) train the model
  37. 37.📋 Planning an AI project: which comes first — improve data, retest or recheck every label? (a) improve data, retest (b) recheck every label
  38. 38.⚖️ Two handwriting reader models were tested on the same 25 handwritten letters. Model A got 25 right and Model B got 24 right. How many percentage points more accurate is Model A?
  39. 39.📋 Planning an AI project: which comes first — correct bad labels or split train and test? (a) correct bad labels (b) split train and test
  40. 40.📋 Planning an AI project: which comes first — split train and test or try unseen examples? (a) split train and test (b) try unseen examples

Answer key

  1. correct ÷ total × 100
  2. 64
  3. 80
  4. to see if it learned
  5. 50
  6. 9
  7. more labelled examples
  8. paper and examples
  9. 10
  10. 85
  11. recheck every label
  12. 54
  13. 80
  14. 20
  15. tag each photo by type
  16. 8
  17. 152
  18. 64
  19. 96
  20. let it learn patterns
  21. 12
  22. 48
  23. 27
  24. 50
  25. 80
  26. 4
  27. gather many examples
  28. choose what to sort
  29. correct bad labels
  30. recheck every label
  31. choose what to sort
  32. 85
  33. test on new photos
  34. 6
  35. label each example
  36. set aside test photos
  37. recheck every label
  38. 4
  39. correct bad labels
  40. split train and test

Free ai for students lessons, practice and worksheets at talentjr.in/ai-for-students