1,1,1,1,2,2,2,2,2,2,2,3, 3, 3,3,3,3,3,3,4,4,4,4,4,4
中間數(shù)是 3
median = 3
higher than median 不包括 median 本身
總?cè)藬?shù)是25
六個(gè)人大於 median
6/25
例題 2,2,3,4,5,6 的median 是 (3 + 4)/2 = 3.5
points one student got 1 分,2分,3分,4分
points one student got 1 分,2分,3分,4分
number of students 4 人 7人 8人 6人（上下對(duì)應(yīng),即拿了1分的學(xué)生有4個(gè)）
1what is the median points?
2 if the teacher chooses one of her students at random,what is the probability that that student will have earned higher than the median grade on the quiz?
(我搞不懂這里的higher than median到底包不包括median自身)
number of students 4 人 7人 8人 6人（上下對(duì)應(yīng),即拿了1分的學(xué)生有4個(gè)）
1what is the median points?
2 if the teacher chooses one of her students at random,what is the probability that that student will have earned higher than the median grade on the quiz?
(我搞不懂這里的higher than median到底包不包括median自身)
英語人氣：473 ℃時(shí)間：2020-05-11 20:35:35
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