An asteroidâs composition is mainly determined by how close it is to the Sun. The asteroids that are nearest the Sun are mostly made of carbon, with smaller amounts of nitrogen, hydrogen and oxygen, while the ones further away are made up of silicate rock.Silicates are very common on Earth and in the Solar System.ut other materials have been found in asteroids, as well. Overview. Asteroids are solid, rocky and irregular bodies that are the rocky remnants of the protoplanetary disk of dust and gas that formed around our young Sun over 4.5 billion years ago.
Judgmental sampling is a non-probability sampling technique where the researcher selects units to be sampled based on their knowledge and professional judgment. Don't miss these related articles:
Audit Sampling. ï¬Audit sampling is the application of an audit. procedure to less than 100% of the items within a. class of transactions for the purpose of evaluating. some characteristic of the class. ï¬It may be statistical or non-statistical. ï¬Sampling based on risk analysis or audit. judgment is non-statistical. Here the audit.