均差

均差	jūn chā	(numerical analysis) divided differences / (statistics) mean absolute difference
均	jūn	equal / even / all / uniform
差	chā	difference; discrepancy / (math.) difference (amount remaining after a subtraction) / (literary) a little; somewhat; slightly
差	chà	different / wrong; mistaken / to fall short; to lack / not up to standard; inferior / Taiwan pr. [cha1]
差	chāi	to send (on an errand) / (archaic) person sent on such an errand / job; official post
差	cī	used in 参差