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[求助]who can help me

:mad::mad:when i use minitab,and have statistic report,there are three paramete confuse me.who can tell the diffrence among them.they are "mean","se mean"and"tr mean"i know "mean "very well,but the last two i know nothing about them.

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clift (威望:3) (四川成都) 金融保险其它

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Se mean=stDev/SQRT(n)

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