A builder orders a large shipment of paving slabs from a particular company. The weights of a sample of randomly selected slabs are given in DS 6.1.7.
(a) Define the population from which the sample is taken. Do you think that it is a representative sample?
(b) Are there any other factors that should be taken into account in interpreting the data set? Are there any issues pertaining to the way in which the sample has been collected that you would want to investigate before interpreting the data set?