MEASURE APP ACCURACY TESTING
4 Person Team | April 2020
Problem Statement
This was my term project for the course Measurements and Analysis. The overall goal of this experiment was to quantify the accuracy of the iPhone Measure app and analyze whether the technology can be considered a reliable measurement tool. In addition, we sought to understand whether the accuracy of the app related to the size of the object being measured.
Constraints
Budget of $0: we sought to conduct this experiment using tools that we already owned
Time: while this experiment was meant to be conducted over an entire semester, COVID-19 reduced our timeframe to about 1 month​​
Distance: this experiment was conducted remotely​​
Results & Analysis
The Measure app was fairly inaccurate - most data points were accurate to ±10% of the true value, but there were several outlying measurements.​​
There was not a clear correlation between the accuracy of the measurements and the size of the object measured.
Because each operator had a different iPhone model, we ran t-testing and variance analysis to determine whether the differences in inaccuracy values between each phone model was a result of the iPhone software or operator influence. Our results did not allow us to separate the variables.
Error due to operator influence, camera differences, and software issues were possible contributors to data inaccuracy.