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.
These bays are huge tourist attractions, and swimming in them, when permitted, is popular. Often the visitors have sprayed themselves with insect repellants containing the active ingredient DEET. The purpose of this paper is to examine the effects of DEET on the ability of the dinoflagellates to emit light. Four samples of the bioluminescent dinoflagellate Pyrocystis fusiformis were tested; added to each was a different concentration of DEET solution.