Build Your Own AI Project Worksheet

AI for students lesson 23: Design a tiny AI project · Set 652 · 40 questions

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.

1. 1.🎯 Tara’s spam spotter was tested on 10 new messages and got 7 right. What is its accuracy in percent?
2. 2.❌ Arjun’s spam spotter was tested on 34 new messages and got 25 right. How many did it get wrong?
3. 3.🧪 Why must you test a model on examples it has NOT seen? (a) to see if it learned (b) to make it bigger (c) to make it faster (d) to save paper
4. 4.❌ Arjun’s recycling sorter was tested on 40 new waste photos and got 35 right. How many did it get wrong?
5. 5.📋 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
6. 6.📦 Vihaan collected 80 labelled leaf photos for a leaf identifier and keeps one fifth of them for testing. How many are left for training?
7. 7.📋 Planning an AI project: which comes first — calculate percent right or try unseen examples? (a) calculate percent right (b) try unseen examples
8. 8.📋 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
9. 9.📦 Diya collected 160 labelled messages for a spam spotter and keeps one fifth of them for testing. How many are left for training?
10. 10.⚖️ Two recycling sorter models were tested on the same 10 waste photos. Model A got 10 right and Model B got 9 right. How many percentage points more accurate is Model A?
11. 11.⚖️ Two recycling sorter models were tested on the same 20 waste photos. Model A got 16 right and Model B got 15 right. How many percentage points more accurate is Model A?
12. 12.🧪 What is accuracy? (a) correct ÷ total × 100 (b) total × 2 (c) correct + total (d) total − correct
13. 13.🎯 Ishaan’s bird-song app was tested on 50 new bird songs and got 35 right. What is its accuracy in percent?
14. 14.📦 Arjun collected 70 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
15. 15.❌ Rohan’s handwriting reader was tested on 33 new handwritten letters and got 28 right. How many did it get wrong?
16. 16.🎯 Aarav’s handwriting reader is 60% accurate. If it is tested on 60 new handwritten letters, how many should it get right?
17. 17.🎯 Ishaan’s leaf identifier is 50% accurate. If it is tested on 50 new leaf photos, how many should it get right?
18. 18.📋 Planning an AI project: which comes first — test on new photos or improve data, retest? (a) test on new photos (b) improve data, retest
19. 19.🧪 Your fruit sorter mixes up oranges and lemons. What helps most? (a) a new colour screen (b) fewer examples (c) more labelled examples (d) a louder speaker
20. 20.🎯 Nisha’s leaf identifier is 60% accurate. If it is tested on 20 new leaf photos, how many should it get right?
21. 21.⚖️ Two fruit sorter models were tested on the same 10 fruit photos. Model A got 10 right and Model B got 7 right. How many percentage points more accurate is Model A?
22. 22.🎯 Tara’s bird-song app was tested on 5 new bird songs and got 3 right. What is its accuracy in percent?
23. 23.📋 Planning an AI project: which comes first — try unseen examples or choose what to sort? (a) try unseen examples (b) choose what to sort
24. 24.📦 Ananya collected 130 labelled fruit photos for a fruit sorter and keeps one fifth of them for testing. How many are left for training?
25. 25.❌ Meera’s recycling sorter was tested on 20 new waste photos and got 16 right. How many did it get wrong?
26. 26.📋 Planning an AI project: which comes first — tag each photo by type or split train and test? (a) tag each photo by type (b) split train and test
27. 27.📋 Planning an AI project: which comes first — test on new photos or fix it and test again? (a) test on new photos (b) fix it and test again
28. 28.📋 Planning an AI project: which comes first — work out the accuracy or collect fruit photos? (a) work out the accuracy (b) collect fruit photos
29. 29.📋 Planning an AI project: which comes first — label each example or calculate percent right? (a) label each example (b) calculate percent right
30. 30.📋 Planning an AI project: which comes first — improve data, retest or work out the accuracy? (a) improve data, retest (b) work out the accuracy
31. 31.📋 Planning an AI project: which comes first — calculate percent right or improve data, retest? (a) calculate percent right (b) improve data, retest
32. 32.🎯 Kabir’s recycling sorter was tested on 25 new waste photos and got 16 right. What is its accuracy in percent?
33. 33.📋 Planning an AI project: which comes first — improve data, retest or let it learn patterns? (a) improve data, retest (b) let it learn patterns
34. 34.📦 Tara collected 120 labelled handwritten letters for a handwriting reader and keeps one fifth of them for testing. How many are left for training?
35. 35.📋 Planning an AI project: which comes first — collect fruit photos or test on new photos? (a) collect fruit photos (b) test on new photos
36. 36.❌ Kabir’s leaf identifier was tested on 44 new leaf photos and got 35 right. How many did it get wrong?
37. 37.❌ Nisha’s fruit sorter was tested on 46 new fruit photos and got 43 right. How many did it get wrong?
38. 38.🎯 Ananya’s handwriting reader is 80% accurate. If it is tested on 70 new handwritten letters, how many should it get right?
39. 39.🎯 Saanvi’s handwriting reader is 60% accurate. If it is tested on 70 new handwritten letters, how many should it get right?
40. 40.📋 Planning an AI project: which comes first — calculate percent right or train the model? (a) calculate percent right (b) train the model

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