An engineer investigated how the number of layers of neoprene sheet wrapped around a cylindrical copper container of hot oil affects the rate of thermal energy transfer to the surroundings. The engineer's results are shown in the graph below.
Describe a method the engineer could have used to obtain the results shown in the graph.
The engineer considered using a high-precision temperature probe connected to a digital datalogger instead of a digital thermometer. Both devices display readings to one decimal place (e.g., 85.3∘C85.3^\circ\text{C}85.3∘C). The datalogger is capable of recording up to 50 readings per second.
Explain why using the temperature probe and digital datalogger would not provide any significant advantage in this specific investigation.