Of course, there is an important question of sample bias in the data [12], [14] (see also the Materials and Methods section), though its extensive use and utility, even in areas where data are scarce [13], is testament to the fact that it can yield important information if treated carefully.
Although our sample of anaesthetists reflects the demographic profile of the English anaesthetic and surgical workforce, there is always a question of how representative a sample is.
Rather than reflecting differential concentration between the two eyeballs, this may be a question of reproducibility related to the sampling procedure [ 81], of analytical problems due to the gelatinous consistency of VH [ 86], and of hematic contamination [ 87].
A question of particular interest was how sample temperature affects the escape rate.
First, there is a question of the degree to which the sample is representative.
This inherent variability can provide useful information to determine the geographical origin of a questioned sample or when comparing and excluding samples, since the composition of soil is dependent on geographical factors such as climate, bedrock geology and land use.
They ask questions of a sampling of people — often about a thousand — and use those answers to draw conclusions about the public at large.
In a valiant attempt to demystify the notorious University of Oxford interview, the top-ranking institution has released a set of sample questions on which prospective applicants – and everyone else – can test their rhetorical and intellectual skills.
To get users started and used to the idea of messaging with places in its app, Path provides a series of sample questions in the map view of what could be asked of different locations.
Each interview began with the question, "What are the most important elements or components of your school?" The protocol then directed interviewers to probe for more detail on the components so that each could be fully described and provided a number of sample questions and prompts for use as appropriate.
