Type your answer on the lines below, or write it out on paper.
A group measured the rate of respiration of woodlice using a respirometer. Their five repeat readings of oxygen uptake, in cm³ g⁻¹ h⁻¹, were:
1.8, 1.9, 1.7, 3.6, 1.8
Identify the anomalous result.
Calculate the mean rate of oxygen uptake, ignoring the anomalous result. Show your working.
Suggest two reasons why the anomalous result may have been higher than the others.