These magma plumes rise to the surface and form chains of volcanoes. Composite volcano magma contains more silica, SiO 2, than that of a shield volcano and is therefore stickier (more viscous). This stickiness plugs up the volcano, causing pressure to build-up. The result is an explosive, dangerous eruption.
It results in a biased sample, a non-random sample of a population (or non-human factors) in which all individuals, or instances, were not equally likely to have been selected. If this is not accounted for, results can be erroneously attributed to the phenomenon under study rather than to the method of sampling.
EXPERIMENTAL BIASES. What is Bias. A dictionary definition of bias is a one-sided inclination of the mind. In experimental psychology, bias is a systematic tendency of certain experimental designs and procedures to produce results that are inaccurate.Biases are part of the human experience.Human beings have many biases, most of which are learned.n experimental psychology, bias is a systematic tendency of certain experimental designs and procedures to produce results that are inaccurate.