About ASTMâ¦. Two New Journals. â¢ Advances in Civil Engineering Materials covers topics relating to the. properties and performance of civil engineering materials, such as concrete, asphalt, steel, polymers and polymeric composites, and wood.
A census is the procedure of systematically acquiring and recording information about the members of a given population. The term is used mostly in  connection with national population and housing censuses; other common censuses include agriculture, business, and traffic censuses.
When a census is not feasible, a chosen subset of the population called a sample is studied. Once a sample that is representative of the population is determined, data is collected for the sample members in an observational or experimental setting. Again, descriptive statistics can be used to summarize the sample data.