You are a partner in a small charter air services company. You and your partners want to reduce maintenance costs and have decided to standardize flight instrumentation across the fleet of 11 different aircraft types.

You need to evaluate the altimeters in each aircraft. The first step in the process is to collect and analyze data from the different altimeters installed in the aircraft. There is an altimeter reading on flight number one that looks unusual, and you want to compare that against the other 19 flights in the sample.

Based off of this chart