• Erusmus University Rotterdam

• ERA era

International Baccalaureate
Internal Assessment
Mathematics HL
Topic:
What are the relations between stress levels and pulse in teengers body during
various life events?
Gintarė Šukytė
The idea for the work came from an phone app that can measure stress level and pulse, my
classmates and me were constantly using this for fun and to find out if the app is legitimate
especially for the stress part. We were always curious about the stress level, because it
seemed strange that a smartphone can measure stress and how do you even measure stress.
Well, apparently it is done by comparing you pulse with the normal humans pulse and all the
curves of heartbeat line. In this work I will determine by using probability theory the
probable outcome after measuring the pulse of a person what should their stress level be. This
will be done by measuring the pulse of 10 people and their stress level at a certain point in
life, then i will just measure the pulse to deduce the probable stress level, before checking it.
This is the how the stress meter looks like and I have cut it into 5 different levels of stress.
From lowest to highest.
Then I have taken my first sample study in order to get to know the pulse and stress levels.
Always measuring the same the 10 in the four situations to get to know their behaviour in
each of them.