Quartiles are the values that divide a list of numbers into quarters: 1  Put the list of numbers in order. 2  Then cut the list into four equal parts. 3  The Quartiles are at the cuts.
Revolve (verb) to turn or roll round on, or as on, an axis, like a wheel; to rotate, -- which is the more specific word in this sense. Revolve (verb) to move in a curved path round a center; as, the planets revolve round the sun. Revolve (verb) to pass in cycles; as, the centuries revolve. Revolve (verb) to return; to pass. Revolve (verb)
rev. 1. a revolution of the crankshaft or other rotating part within an engine. 2. to accelerate sharply the speed of (an internal-combustion engine), esp. while the clutch is disengaged (often fol. by up).3. (of an engine) to accelerate; become revved (often fol. by up).. rev-rate of revolution of a motor; the engine was doing 6000 revs. revolutions per minute, rpm. rate-a magnitude or frequency relative to a time unit; they traveled at a rate of 55 miles per hour; the rate of change was faster than expected.