This project was used in a Statistics Enrichment Camp at NUS in June 2017. The participants were from various secondary schools and junior colleges in Singapore.
For my activity, I intended to show them some of the considerations that a statistician has to make. Here’s how the activity went:
- At the beginning of the day, some students were randomly selected to perform a mock crime. They were pulled aside from the main group and asked to read through the following document. Some of them were assigned to the role of truth-teller and some to the role of liar.
- Depending on their role, they were told to go into a room and perform the crime – either to remove a toy and hide it on their body (liar), or count the number of toys (truth-teller).
- During the actual activity, these students were tested using a heart-rate recorder built using an Arduino. This was the testing script that was read to them as part of the test.
- Here is a document that describes what happened. It can be used to brief the students just prior to the testing.
- A debriefing was conducted using the following slides.
Electronic components used
- Arduino Uno
- Seeed Grove heart rate sensor
- 3 x LEDs
- Jumper cables/leads
- 4 resistors – 220 Ohm, and 3 110 Ohm resistors
- 1 push-button switch
The components were connected in the following way:
- R and shiny. The data collected was analysed using this shiny app. You can try it out with this example dataset. For the smoothing of the heart-rate, the Tukey 3R smoother was used.
- The Arduino code is available from my bitbucket account page. My bitbucket id is singator, and the repository name is stats_camp. If you cannot find it, please do not hesitate to email me to get it.
I do hope the students found it interesting 🙂