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AI for students lesson 23: Design a tiny AI project · Set 604 · 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.🎯 Arjun’s fruit sorter is 80% accurate. If it is tested on 70 new fruit photos, how many should it get right?
  2. 2.🎯 Rohan’s handwriting reader was tested on 25 new handwritten letters and got 20 right. What is its accuracy in percent?
  3. 3.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) a new colour screen (b) a louder speaker (c) more labelled examples (d) fewer examples
  4. 4.🧪 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
  5. 5.📋 Planning an AI project: which comes first — fix it and test again or calculate percent right? (a) fix it and test again (b) calculate percent right
  6. 6.🎯 Aarav’s leaf identifier is 60% accurate. If it is tested on 30 new leaf photos, how many should it get right?
  7. 7.⚖️ Two leaf identifier models were tested on the same 10 leaf photos. Model A got 6 right and Model B got 5 right. How many percentage points more accurate is Model A?
  8. 8.⚖️ Two fruit sorter models were tested on the same 20 fruit photos. Model A got 13 right and Model B got 10 right. How many percentage points more accurate is Model A?
  9. 9.🎯 Aarav’s bird-song app is 80% accurate. If it is tested on 90 new bird songs, how many should it get right?
  10. 10.⚖️ Two handwriting reader models were tested on the same 10 handwritten letters. Model A got 10 right and Model B got 8 right. How many percentage points more accurate is Model A?
  11. 11.🎯 Diya’s recycling sorter was tested on 50 new waste photos and got 48 right. What is its accuracy in percent?
  12. 12.📦 Kabir collected 40 labelled bird songs for a bird-song app and keeps one fifth of them for testing. How many are left for training?
  13. 13.⚖️ Two bird-song app models were tested on the same 50 bird songs. Model A got 50 right and Model B got 30 right. How many percentage points more accurate is Model A?
  14. 14.📦 Diya collected 40 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  15. 15.🎯 Diya’s recycling sorter is 80% accurate. If it is tested on 40 new waste photos, how many should it get right?
  16. 16.🎯 Rohan’s leaf identifier was tested on 50 new leaf photos and got 26 right. What is its accuracy in percent?
  17. 17.📋 Planning an AI project: which comes first — work out the accuracy or test on new photos? (a) work out the accuracy (b) test on new photos
  18. 18.🎯 Ananya’s bird-song app was tested on 10 new bird songs and got 5 right. What is its accuracy in percent?
  19. 19.⚖️ Two bird-song app models were tested on the same 50 bird songs. Model A got 41 right and Model B got 39 right. How many percentage points more accurate is Model A?
  20. 20.❌ Ananya’s fruit sorter was tested on 48 new fruit photos and got 43 right. How many did it get wrong?
  21. 21.⚖️ Two leaf identifier models were tested on the same 20 leaf photos. Model A got 19 right and Model B got 16 right. How many percentage points more accurate is Model A?
  22. 22.⚖️ Two recycling sorter models were tested on the same 20 waste photos. Model A got 18 right and Model B got 10 right. How many percentage points more accurate is Model A?
  23. 23.📋 Planning an AI project: which comes first — fix it and test again or try unseen examples? (a) fix it and test again (b) try unseen examples
  24. 24.📋 Planning an AI project: which comes first — tag each photo by type or correct bad labels? (a) tag each photo by type (b) correct bad labels
  25. 25.🧪 Why must you test a model on examples it has NOT seen? (a) to make it bigger (b) to make it faster (c) to see if it learned (d) to save paper
  26. 26.📋 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
  27. 27.⚖️ Two leaf identifier models were tested on the same 25 leaf photos. Model A got 25 right and Model B got 24 right. How many percentage points more accurate is Model A?
  28. 28.🧪 What is accuracy? (a) correct ÷ total × 100 (b) total × 2 (c) total − correct (d) correct + total
  29. 29.❌ Meera’s leaf identifier was tested on 25 new leaf photos and got 19 right. How many did it get wrong?
  30. 30.📋 Planning an AI project: which comes first — pick a question to solve or fix it and test again? (a) pick a question to solve (b) fix it and test again
  31. 31.📋 Planning an AI project: which comes first — calculate percent right or try unseen examples? (a) calculate percent right (b) try unseen examples
  32. 32.❌ Saanvi’s leaf identifier was tested on 30 new leaf photos and got 27 right. How many did it get wrong?
  33. 33.📋 Planning an AI project: which comes first — calculate percent right or let it learn patterns? (a) calculate percent right (b) let it learn patterns
  34. 34.📦 Vihaan collected 70 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  35. 35.📋 Planning an AI project: which comes first — improve data, retest or test on new photos? (a) improve data, retest (b) test on new photos
  36. 36.📋 Planning an AI project: which comes first — label each example or improve data, retest? (a) label each example (b) improve data, retest
  37. 37.📋 Planning an AI project: which comes first — improve data, retest or collect fruit photos? (a) improve data, retest (b) collect fruit photos
  38. 38.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 6 right and Model B got 5 right. How many percentage points more accurate is Model A?
  39. 39.🎯 Nisha’s bird-song app was tested on 10 new bird songs and got 9 right. What is its accuracy in percent?
  40. 40.📋 Planning an AI project: which comes first — collect fruit photos or work out the accuracy? (a) collect fruit photos (b) work out the accuracy

Answer key

  1. 56
  2. 80
  3. more labelled examples
  4. paper and examples
  5. calculate percent right
  6. 18
  7. 10
  8. 15
  9. 72
  10. 20
  11. 96
  12. 32
  13. 40
  14. 32
  15. 32
  16. 52
  17. test on new photos
  18. 50
  19. 4
  20. 5
  21. 15
  22. 40
  23. try unseen examples
  24. tag each photo by type
  25. to see if it learned
  26. choose what to sort
  27. 4
  28. correct ÷ total × 100
  29. 6
  30. pick a question to solve
  31. try unseen examples
  32. 3
  33. let it learn patterns
  34. 56
  35. test on new photos
  36. label each example
  37. collect fruit photos
  38. 10
  39. 90
  40. collect fruit photos

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