Detailed Case Study Search the Archive Feedback

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

- Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
- Bring these devices into the lesson.

4. Cut them out and place them around your class / school.

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

## Question | ## Answer |

1. 1. Find the mean of 50, 30, 95, 85. | 65 |

2. 2. What is the mean grade for a student who received the following scores on 7 math tests? 72%, 85%, 75%, 89%, 81%, 88%, 70% | 80 |

3. 3. What is the median in the following set: 15, 23, 18, 11, 17, 15 | 16 |

4. 4. What is the median of the following data set? 18, 16, 17, 3, 4, 6, 17, 5, 2, 10, 9 | 9 |

5. 5. What is the mode of the following set of data? 15, 12, 16, 10, 15, 15, 3, 18, 12, 10, 9 | 15 |

6. 6. The temperatures for a week in July were 21, 17, 19, 21, 23, 20, and 16. What is the mode? | 21 |

7. 7. What is the range in the following set of data? 15, 15, 27, 9, 44 | 35 |

8. 8. Add the Ranges in each set of data. A) 3, 22, 9, 27, 14, 5 B) 8, 6, 24, 17, 8, 22 C) 66, 78, 44, 75, 84, 80 D) 158, 167, 138, 172, 160, 168 | 96 |

9. 9. What is the outlier in this set of data? 45, 32, 41, 8, 35, 42, 39, 33 | 8 |

10. 10. Add the mean, median, and mode from this set of data. 10, 10, 16, 18, 22, 10, 15, 19, 20, 21, 18, 13 | 43 |

11. 11. Find the mean, median, and mode. Then find the range of those three numbers. This is the set of data. 97, 80, 64, 70, 98, 9, 66, 87, 82, 97, 83, 67 | 22 |

12. 12. Five numbers have a mean of 12. Four of the numbers are 8, 24, 16, and 6. What is the fifth number? | 6 |

13. 13. Five numbers have a mean of 5, median of 6, mode of 7, and the range is 6. If you divide the largest number by the smallest number, what would you get? | 7 |

14. 14. Barry wants a 90% mean average on his tests. He has already done 4 of them. He got 88%, 85%, 93%, and 84%. What will he have to get on his next test to have a 90% mean average? | 100 |

15. 15. How many possible outcomes are there in a standard deck of cards? | 52 |

16. 16. How many possible outcomes are there if you roll two dice? | 36 |

17. 17. What is the probability (as a percent) of flipping a coin and getting tails? | 50 |

18. 18. Tommy has a bag with the following marbles: 5 red, 1, blue, 6 green, 4 yellow and 9 white. He reaches into the case without looking and pulls out one marble. What is the probability as a percent that it will be a red marble? | 20 |

19. 19. What is the probability (as a decimal) of drawing a black card OR a red card from a standard deck of cards? | 1 |

20. 20. Take your last answer and multiply it by 100. Then subtract 3. | 97 |

21. 21. Excellent job!!! You are done. Bring your sheet to your teacher. | 0 |

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