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AI for students lesson 23: Design a tiny AI project · Set 421 · 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 (b) total × 2 (c) correct ÷ total × 100 (d) total − correct
  2. 2.🎯 Tara’s bird-song app was tested on 5 new bird songs and got 5 right. What is its accuracy in percent?
  3. 3.⚖️ Two spam spotter models were tested on the same 25 messages. Model A got 25 right and Model B got 24 right. How many percentage points more accurate is Model A?
  4. 4.🎯 Diya’s handwriting reader was tested on 5 new handwritten letters and got 3 right. What is its accuracy in percent?
  5. 5.📦 Meera collected 40 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
  6. 6.🎯 Aarav’s fruit sorter is 70% accurate. If it is tested on 70 new fruit photos, how many should it get right?
  7. 7.❌ Ishaan’s spam spotter was tested on 50 new messages and got 42 right. How many did it get wrong?
  8. 8.📦 Ananya collected 80 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  9. 9.📦 Ishaan collected 80 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  10. 10.📋 Planning an AI project: which comes first — choose what to sort or fix it and test again? (a) choose what to sort (b) fix it and test again
  11. 11.🎯 Aarav’s handwriting reader was tested on 25 new handwritten letters and got 23 right. What is its accuracy in percent?
  12. 12.🎯 Tara’s handwriting reader is 50% accurate. If it is tested on 20 new handwritten letters, how many should it get right?
  13. 13.📋 Planning an AI project: which comes first — train the model or improve data, retest? (a) train the model (b) improve data, retest
  14. 14.📋 Planning an AI project: which comes first — tag each photo by type or calculate percent right? (a) tag each photo by type (b) calculate percent right
  15. 15.📋 Planning an AI project: which comes first — pick a question to solve or calculate percent right? (a) pick a question to solve (b) calculate percent right
  16. 16.🎯 Meera’s fruit sorter was tested on 4 new fruit photos and got 4 right. What is its accuracy in percent?
  17. 17.🎯 Rohan’s bird-song app is 60% accurate. If it is tested on 60 new bird songs, how many should it get right?
  18. 18.📋 Planning an AI project: which comes first — improve data, retest or calculate percent right? (a) improve data, retest (b) calculate percent right
  19. 19.🎯 Rohan’s spam spotter is 50% accurate. If it is tested on 50 new messages, how many should it get right?
  20. 20.📋 Planning an AI project: which comes first — try unseen examples or work out the accuracy? (a) try unseen examples (b) work out the accuracy
  21. 21.📋 Planning an AI project: which comes first — try unseen examples or pick a question to solve? (a) try unseen examples (b) pick a question to solve
  22. 22.⚖️ Two recycling sorter models were tested on the same 20 waste photos. Model A got 18 right and Model B got 13 right. How many percentage points more accurate is Model A?
  23. 23.⚖️ Two recycling sorter models were tested on the same 20 waste photos. Model A got 18 right and Model B got 14 right. How many percentage points more accurate is Model A?
  24. 24.🎯 Tara’s spam spotter is 50% accurate. If it is tested on 30 new messages, how many should it get right?
  25. 25.⚖️ Two bird-song app models were tested on the same 10 bird songs. Model A got 10 right and Model B got 8 right. How many percentage points more accurate is Model A?
  26. 26.🎯 Tara’s recycling sorter is 60% accurate. If it is tested on 80 new waste photos, how many should it get right?
  27. 27.🎯 Vihaan’s recycling sorter was tested on 4 new waste photos and got 2 right. What is its accuracy in percent?
  28. 28.📦 Vihaan collected 50 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  29. 29.🎯 Aarav’s recycling sorter was tested on 10 new waste photos and got 6 right. What is its accuracy in percent?
  30. 30.⚖️ Two recycling sorter models were tested on the same 25 waste photos. Model A got 24 right and Model B got 22 right. How many percentage points more accurate is Model A?
  31. 31.🧪 You can plan a simple AI project with… (a) nothing at all (b) only a big robot (c) paper and examples (d) a secret password
  32. 32.🎯 Kabir’s leaf identifier was tested on 5 new leaf photos and got 3 right. What is its accuracy in percent?
  33. 33.🧪 Why must you test a model on examples it has NOT seen? (a) to make it bigger (b) to make it faster (c) to save paper (d) to see if it learned
  34. 34.📋 Planning an AI project: which comes first — test on new photos or improve data, retest? (a) test on new photos (b) improve data, retest
  35. 35.❌ Kabir’s recycling sorter was tested on 30 new waste photos and got 27 right. How many did it get wrong?
  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 — work out the accuracy or tag each photo by type? (a) work out the accuracy (b) tag each photo by type
  38. 38.📋 Planning an AI project: which comes first — gather many examples or recheck every label? (a) gather many examples (b) recheck every label
  39. 39.📋 Planning an AI project: which comes first — fix it and test again or work out the accuracy? (a) fix it and test again (b) work out the accuracy
  40. 40.📋 Planning an AI project: which comes first — test on new photos or work out the accuracy? (a) test on new photos (b) work out the accuracy

Answer key

  1. correct ÷ total × 100
  2. 100
  3. 4
  4. 60
  5. 32
  6. 49
  7. 8
  8. 64
  9. 64
  10. choose what to sort
  11. 92
  12. 10
  13. train the model
  14. tag each photo by type
  15. pick a question to solve
  16. 100
  17. 36
  18. calculate percent right
  19. 25
  20. try unseen examples
  21. pick a question to solve
  22. 25
  23. 20
  24. 15
  25. 20
  26. 48
  27. 50
  28. 40
  29. 60
  30. 8
  31. paper and examples
  32. 60
  33. to see if it learned
  34. test on new photos
  35. 3
  36. train the model
  37. tag each photo by type
  38. gather many examples
  39. work out the accuracy
  40. test on new photos

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