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In figures and experimental sciences, the ± indicator typically suggests The arrogance interval or uncertainty bounding a range of feasible problems in a very measurement, normally the standard deviation or regular error. The sign can also symbolize an inclusive variety of values that a looking at may have.自行车漫骑å£å±žäºŽè‡ªè¡Œè½¦éª‘è¡Œçš