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AI for students lesson 23: Design a tiny AI project · Set 91 · 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.🎯 Ananya’s spam spotter was tested on 50 new messages and got 45 right. What is its accuracy in percent?
  2. 2.❌ Nisha’s fruit sorter was tested on 42 new fruit photos and got 33 right. How many did it get wrong?
  3. 3.📦 Arjun collected 60 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
  4. 4.🎯 Rohan’s spam spotter was tested on 4 new messages and got 2 right. What is its accuracy in percent?
  5. 5.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) fewer examples (b) a louder speaker (c) a new colour screen (d) more labelled examples
  6. 6.🎯 Vihaan’s fruit sorter was tested on 25 new fruit photos and got 14 right. What is its accuracy in percent?
  7. 7.⚖️ Two spam spotter models were tested on the same 50 messages. Model A got 46 right and Model B got 34 right. How many percentage points more accurate is Model A?
  8. 8.🎯 Aarav’s fruit sorter was tested on 4 new fruit photos and got 4 right. What is its accuracy in percent?
  9. 9.🧪 You can plan a simple AI project with… (a) a secret password (b) nothing at all (c) paper and examples (d) only a big robot
  10. 10.❌ Tara’s handwriting reader was tested on 41 new handwritten letters and got 40 right. How many did it get wrong?
  11. 11.📋 Planning an AI project: which comes first — try unseen examples or recheck every label? (a) try unseen examples (b) recheck every label
  12. 12.🎯 Aarav’s spam spotter was tested on 5 new messages and got 5 right. What is its accuracy in percent?
  13. 13.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 8 right and Model B got 6 right. How many percentage points more accurate is Model A?
  14. 14.🎯 Nisha’s recycling sorter was tested on 4 new waste photos and got 2 right. What is its accuracy in percent?
  15. 15.📋 Planning an AI project: which comes first — train the model or split train and test? (a) train the model (b) split train and test
  16. 16.📋 Planning an AI project: which comes first — improve data, retest or calculate percent right? (a) improve data, retest (b) calculate percent right
  17. 17.📦 Meera collected 180 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  18. 18.⚖️ 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?
  19. 19.🎯 Saanvi’s recycling sorter is 50% accurate. If it is tested on 20 new waste photos, how many should it get right?
  20. 20.🧪 Why must you test a model on examples it has NOT seen? (a) to see if it learned (b) to make it faster (c) to save paper (d) to make it bigger
  21. 21.❌ Ishaan’s recycling sorter was tested on 16 new waste photos and got 14 right. How many did it get wrong?
  22. 22.🎯 Aarav’s leaf identifier is 80% accurate. If it is tested on 40 new leaf photos, how many should it get right?
  23. 23.🎯 Rohan’s bird-song app was tested on 10 new bird songs and got 5 right. What is its accuracy in percent?
  24. 24.📦 Vihaan collected 160 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  25. 25.📋 Planning an AI project: which comes first — calculate percent right or try unseen examples? (a) calculate percent right (b) try unseen examples
  26. 26.⚖️ 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?
  27. 27.🎯 Vihaan’s bird-song app is 80% accurate. If it is tested on 90 new bird songs, how many should it get right?
  28. 28.📦 Nisha collected 60 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  29. 29.⚖️ Two handwriting reader models were tested on the same 25 handwritten letters. Model A got 22 right and Model B got 19 right. How many percentage points more accurate is Model A?
  30. 30.❌ Kabir’s spam spotter was tested on 25 new messages and got 22 right. How many did it get wrong?
  31. 31.📦 Nisha collected 40 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  32. 32.📋 Planning an AI project: which comes first — gather many examples or calculate percent right? (a) gather many examples (b) calculate percent right
  33. 33.❌ Tara’s leaf identifier was tested on 49 new leaf photos and got 46 right. How many did it get wrong?
  34. 34.🎯 Arjun’s handwriting reader is 80% accurate. If it is tested on 90 new handwritten letters, how many should it get right?
  35. 35.⚖️ Two leaf identifier models were tested on the same 20 leaf photos. Model A got 19 right and Model B got 12 right. How many percentage points more accurate is Model A?
  36. 36.📋 Planning an AI project: which comes first — improve data, retest or correct bad labels? (a) improve data, retest (b) correct bad labels
  37. 37.📋 Planning an AI project: which comes first — gather many examples or recheck every label? (a) gather many examples (b) recheck every label
  38. 38.❌ Tara’s fruit sorter was tested on 44 new fruit photos and got 39 right. How many did it get wrong?
  39. 39.📋 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
  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. 90
  2. 9
  3. 48
  4. 50
  5. more labelled examples
  6. 56
  7. 24
  8. 100
  9. paper and examples
  10. 1
  11. recheck every label
  12. 100
  13. 20
  14. 50
  15. split train and test
  16. calculate percent right
  17. 144
  18. 4
  19. 10
  20. to see if it learned
  21. 2
  22. 32
  23. 50
  24. 128
  25. try unseen examples
  26. 20
  27. 72
  28. 48
  29. 12
  30. 3
  31. 32
  32. gather many examples
  33. 3
  34. 72
  35. 35
  36. correct bad labels
  37. gather many examples
  38. 5
  39. label each example
  40. test on new photos

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