Consider the data set of paving slab weights given in DS 1. Construct a point estimate of the average slab weight. What is the standard error of your point estimate?
DS 1
Answer these questions for each data set. The data sets labeled DS 1 are on the accompanying CD.
(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?
