Sampling sources : a major issue for the quality of results
In computing, GIGO (Garbage In, Garbage Out) is the idea that faulty or nonsensical input data produce nonsensical or “rubbish” output. This expression holds true in the world of research. The quality and reliability of the results of a measurement system depend on the quality of the input data, that is to say on the sample quality and the sampling sources in the case of a sample survey.