Spearmanâs rank correlation test is a test of significance based on Spearmanâs rank correlation coefficient (monotonic correlation between two ranked variables), which is carried out to detect the presence of heteroscedasticity. Assumptions of the test: Population correlation coefficent is 0.
N,N-Diethyl-meta-toluamide, also called DEET (/diËt/) or diethyltoluamide, is the most common active ingredient in insect repellents. It is a slightly yellow oil intended to be applied to the skin or to clothing, and provides protection against mosquitoes, ticks, fleas, chiggers, leeches, and many biting insects. 1 History.
Adit, a horizontal or near-horizontal passage driven from the Earthâs surface into the side of a ridge or mountain for the purpose of working, ventilating, or removing water from a mine. adit Entrance of an abandoned adit, Medford, Ore. U.S. Department of the Interior/Bureau of Land Management