Hardness of brick pavers
Use this simulation to demonstrate that repetition of the data collection would usually result in different values. The point again is that a single sample is not as important as the 'process' behind the data — i.e. we want to generalise from the sample to something more fundamental about the hardness of pavers in general.
This is a simulation but the context is an experiment to assess the durability of one type of brick pavers in which a sharpened drill impacted the surface of 10 pavers for a period of 1 minute. The volume of material eroded (mL) was recorded.