Which statement describes a common measurement error?

a) a flaw in the design of an experiment

b) using inconsistent methods for collecting data

c) using instruments that have not been calibrated

d) selecting experimental subjects in a way that is biase

Answer - C (Using instruments that have not been calibrated).

When the integrity of an instrument’s calibration has been compromised (usually due to exposure to a shock, vibration, or physical damage), it needs to be calibrated; failure to do this inevitably leads to inaccurate measurement; this is a very common measurement error.