我和我LD都在大学教书, 为一件事情争论不休，谁也不能说服谁，发出来想看看大家的想法： We argued about data distribution, and we both got a little mad at each other. LD asked, "if the average exam score is 60, what's the most likely score of a student you randomly picked?" I answered "80". LD continued to ask if the distribution is Gaussian, what’s the most probable score of the student you randomly pick? Will you still pick 80? After hearing LD's explanations, I realized the correct answer should be 60 but I said I would still answer 80 as I was mad. LD asked what would you teach your child to answer? I said 80, which I knew is a wrong answer. We argued for a while and our child was there. LD thought that I was intentionally trying to teach child the wrong math answer and said to me while our child was there, “Don’t teach your child math in the future.” LD also mentioned that “你不配teach math”. LD is very serious about scientific attitude and wants child to be taught the true world view and right or wrong, similar to teaching children 1+1=2 but not =3. LD would also say the same thing to a teacher with the presence of the child if the teacher is intentionally teaching our child a wrong math concept. LD truly believes that teaching 1+1=3 is distorting the mind of a child, which is as serious as teaching a child to kill people. 我因为听到了“不配”两个字，心里非常难过，也很生气，觉得“不配”两个字很伤人。 在 LD 心里，故意教孩子错误的数学知识，等同于教孩子杀人放火，所以当孩子的面说我"不配"教数学，是我deserve的。 我和LD至今就“不配”这句话达成一致的看法。
“After hearing LD's explanations, I realized the correct answer should be 60 but I said I would still answer 80 as I was mad.” 这个时候，你老公还没用“不配”这种气人话，你气啥？生气了，就故意选错答案？ 怎么那么幼稚啊
I hope you don't teach anything stat related because the concept of "average" is one of the most foundational concepts in statistics. tseco 发表于 2021-01-22 19:04
Average is not equivalent to most frequent /typical
We argued about data distribution, and we both got a little mad at each other.
LD asked, "if the average exam score is 60, what's the most likely score of a student you randomly picked?"
I answered "80".
LD continued to ask if the distribution is Gaussian, what’s the most probable score of the student you randomly pick? Will you still pick 80?
After hearing LD's explanations, I realized the correct answer should be 60 but I said I would still answer 80 as I was mad.
LD asked what would you teach your child to answer? I said 80, which I knew is a wrong answer.
We argued for a while and our child was there. LD thought that I was intentionally trying to teach child the wrong math answer and said to me while our child was there, “Don’t teach your child math in the future.” LD also mentioned that “你不配teach math”. LD is very serious about scientific attitude and wants child to be taught the true world view and right or wrong, similar to teaching children 1+1=2 but not =3. LD would also say the same thing to a teacher with the presence of the child if the teacher is intentionally teaching our child a wrong math concept. LD truly believes that teaching 1+1=3 is distorting the mind of a child, which is as serious as teaching a child to kill people.
我因为听到了“不配”两个字，心里非常难过，也很生气，觉得“不配”两个字很伤人。
在 LD 心里，故意教孩子错误的数学知识，等同于教孩子杀人放火，所以当孩子的面说我"不配"教数学，是我deserve的。
我和LD至今就“不配”这句话达成一致的看法。
你能不能解释一下你第一反应80的原因是什么。
不好意思，我只看了前三行就觉得你怎么会在大学教书。。。。
一个班能有几个人啊，我看不见得是Gaussian distribution。完全有可能是一堆成绩好的加上一些特别烂的、缺考的average成60嘛。
lz可能是intuitively觉得80分的最多，也不一定是错的吧。可以MC simulation一下。
每个人都有错的和不行的地方，没必要用这样hurt人的方式说话。
如果这样和老婆说话，小心他以后也会用不当词语指责小孩，小孩积极性会被打击。
你的情绪可以表达：哦，刚才说错了，但是你说话太难听，我现在就要跟你作对，偏要说错误的答案。你问我，我还说80，我知道错，我就是要说错的。
情绪和真理keyi共存
单纯说，如果一个“老师”故意教给孩子错误的概念，这个“老师”还真不配当老师。
so weird of mixing Chinese with English!
Average is not equivalent to most frequent /typical
哎，其实正是在大学里教书才会如此幼稚； 您觉得经过真正非象牙塔的生活毒打的人，会争这些么？ 会这样去争么？
对不起 吵架能手 忍不住 我就会釜底抽薪这个LD ： 你一个班的学生就敢说 Gaussian 分布，你学过中心极限定理么，大数定律么，你TMD 才不配 teach math， 哈哈哈 贴主消消气
我猜测LZ mm的LD想要逗她说60，然后抛出肥尾分布（或者类似情况）驳倒她。这种行为好差的，必须站她一边。^_^ 不就是个普通的数学概念，还翘尾巴啦？
可能字数比较多
是啊，不一定正态分布吧。mode 不一定等于mean, 就那么几个学生。
哈哈 你的回答是最认真的！我喜欢