There is a close relationship between confidence intervals and significance tests. Specifically, if a statistic is significantly different from 0 at the 0.05 level, then the 95% confidence interval will not contain 0.
U.S. National Library of Medicine(0.00 / 0 votes)Rate this definition: Air Pressure. The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment.
Units of Atmospheric Pressure. Pascal (Pa): a SI (Systeme Internationale) unit for air pressure. 1 Pa = force of 1 newton acting on a surface of one square meter. 1 hectopascal (hPa) = 1 millibar (mb) [hecto = one hundred =100] Bar: a more popular unit for air pressure. 1 bar = 1000 hPa = 1000 mb One atmospheric pressure= standard value of atmospheric pressure at lea level = 1013.25 mb = 1013.25 hPa. ESS5 Prof. Jin-Yi Yu Mercury Barometers â Height of mercury indicates downward force of air pressure â Three barometric corrections must be made to