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AI for students lesson 23: Design a tiny AI project · Set 455 · 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.⚖️ Two leaf identifier models were tested on the same 10 leaf photos. Model A got 7 right and Model B got 6 right. How many percentage points more accurate is Model A?
  2. 2.📋 Planning an AI project: which comes first — let it learn patterns or improve data, retest? (a) let it learn patterns (b) improve data, retest
  3. 3.📦 Vihaan collected 50 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
  4. 4.❌ Tara’s handwriting reader was tested on 41 new handwritten letters and got 33 right. How many did it get wrong?
  5. 5.🧪 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
  6. 6.📋 Planning an AI project: which comes first — calculate percent right or test on new photos? (a) calculate percent right (b) test on new photos
  7. 7.🧪 What is accuracy? (a) correct ÷ total × 100 (b) correct + total (c) total − correct (d) total × 2
  8. 8.🎯 Aarav’s spam spotter was tested on 5 new messages and got 5 right. What is its accuracy in percent?
  9. 9.📋 Planning an AI project: which comes first — let it learn patterns or split train and test? (a) let it learn patterns (b) split train and test
  10. 10.🎯 Ananya’s recycling sorter is 50% accurate. If it is tested on 30 new waste photos, how many should it get right?
  11. 11.📋 Planning an AI project: which comes first — set aside test photos or improve data, retest? (a) set aside test photos (b) improve data, retest
  12. 12.⚖️ Two spam spotter models were tested on the same 10 messages. Model A got 10 right and Model B got 5 right. How many percentage points more accurate is Model A?
  13. 13.📦 Vihaan collected 180 labelled waste photos for a recycling sorter and keeps one fifth of them for testing. How many are left for training?
  14. 14.🎯 Arjun’s leaf identifier was tested on 25 new leaf photos and got 22 right. What is its accuracy in percent?
  15. 15.🎯 Nisha’s spam spotter is 60% accurate. If it is tested on 40 new messages, how many should it get right?
  16. 16.📦 Nisha collected 100 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
  17. 17.📋 Planning an AI project: which comes first — improve data, retest or work out the accuracy? (a) improve data, retest (b) work out the accuracy
  18. 18.📋 Planning an AI project: which comes first — test on new photos or set aside test photos? (a) test on new photos (b) set aside test photos
  19. 19.❌ Kabir’s bird-song app was tested on 19 new bird songs and got 18 right. How many did it get wrong?
  20. 20.⚖️ Two fruit sorter models were tested on the same 20 fruit photos. Model A got 14 right and Model B got 11 right. How many percentage points more accurate is Model A?
  21. 21.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) a new colour screen (b) a louder speaker (c) fewer examples (d) more labelled examples
  22. 22.⚖️ Two bird-song app models were tested on the same 50 bird songs. Model A got 36 right and Model B got 32 right. How many percentage points more accurate is Model A?
  23. 23.📋 Planning an AI project: which comes first — label each example or collect fruit photos? (a) label each example (b) collect fruit photos
  24. 24.📋 Planning an AI project: which comes first — collect fruit photos or set aside test photos? (a) collect fruit photos (b) set aside test photos
  25. 25.❌ Rohan’s handwriting reader was tested on 38 new handwritten letters and got 36 right. How many did it get wrong?
  26. 26.🎯 Ananya’s bird-song app was tested on 4 new bird songs and got 2 right. What is its accuracy in percent?
  27. 27.📋 Planning an AI project: which comes first — pick a question to solve or collect fruit photos? (a) pick a question to solve (b) collect fruit photos
  28. 28.📋 Planning an AI project: which comes first — choose what to sort or split train and test? (a) choose what to sort (b) split train and test
  29. 29.📦 Ishaan collected 110 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  30. 30.🎯 Nisha’s fruit sorter was tested on 20 new fruit photos and got 19 right. What is its accuracy in percent?
  31. 31.⚖️ Two leaf identifier models were tested on the same 50 leaf photos. Model A got 42 right and Model B got 37 right. How many percentage points more accurate is Model A?
  32. 32.📋 Planning an AI project: which comes first — set aside test photos or try unseen examples? (a) set aside test photos (b) try unseen examples
  33. 33.📋 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
  34. 34.📦 Saanvi collected 60 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
  35. 35.📋 Planning an AI project: which comes first — label each example or let it learn patterns? (a) label each example (b) let it learn patterns
  36. 36.📋 Planning an AI project: which comes first — collect fruit photos or work out the accuracy? (a) collect fruit photos (b) work out the accuracy
  37. 37.🎯 Saanvi’s handwriting reader is 70% accurate. If it is tested on 100 new handwritten letters, how many should it get right?
  38. 38.🎯 Rohan’s fruit sorter is 60% accurate. If it is tested on 80 new fruit photos, how many should it get right?
  39. 39.📋 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
  40. 40.📋 Planning an AI project: which comes first — pick a question to solve or gather many examples? (a) pick a question to solve (b) gather many examples

Answer key

  1. 10
  2. let it learn patterns
  3. 40
  4. 8
  5. to see if it learned
  6. test on new photos
  7. correct ÷ total × 100
  8. 100
  9. split train and test
  10. 15
  11. set aside test photos
  12. 50
  13. 144
  14. 88
  15. 24
  16. 80
  17. work out the accuracy
  18. set aside test photos
  19. 1
  20. 15
  21. more labelled examples
  22. 8
  23. collect fruit photos
  24. collect fruit photos
  25. 2
  26. 50
  27. pick a question to solve
  28. choose what to sort
  29. 88
  30. 95
  31. 10
  32. set aside test photos
  33. test on new photos
  34. 48
  35. label each example
  36. collect fruit photos
  37. 70
  38. 48
  39. test on new photos
  40. pick a question to solve

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