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Upper Quartile
The 75th percentile, calculated by ordering the data from smallest to largest and finding the value which lies 75% of the way up through the data.
UPS
A type of power supply designed to support the load for specified periods when the line varies outside specified limits.
upsilon
A letter of the Greek alphabet.
Science & Engineering Encyclopaedia Version 2.3 © 2001-2008 Dirac Delta Consultants Limited