The best stats you've ever seen | Hans Rosling

[Music] but ten years ago I took on the task to teach global development to Swedish undergraduate students that was after having spent about 20 years together with African institutions studying hunger

[音乐] 但十年前，我接手了一项任务：向瑞典本科生讲授全球发展课程。那是在我与非洲机构合作研究饥饿问题约二十年后发生的。

in Africa so I was sort of expected to know a little about the world and I started in our medical university Karolinska Institute an undergraduate course called global health but when

在非洲，所以我被期望对世界有些了解，于是我在卡罗林斯卡医学院开设了一门名为“全球健康”的本科课程，但是……

you get that opportunity you get a little nervous I thought these students coming to us actually have the highest grade you can get in Swedish college system so I thought maybe

当你获得这样的机会时，你会感到有点紧张。我想这些来到我们这里的学生，在瑞典的大学体系中成绩都是顶尖的，所以我想也许……

they know everything I'm going to teach them about so I did a pretest when they came and one of the question from which I learned a lot was this one which

他们可能知道我要教给他们的一切。于是我做了一个预测试，其中有一个问题让我学到了很多：这五组国家中，哪一组的儿童死亡率最高？

country has the highest child mortality of these five pairs and I put them together so that in each pair of country one has twice the child mortality of the other and

我把它们配对，使得每对国家中，一国的儿童死亡率是另一国的两倍。

this means that it's much bigger the difference than the uncertainty of the data I won't put you to test here but it's Turkey which is high as there Poland Russia Pakistan

这意味着差异之大远超数据的不确定性。我不打算在这里考你们，但答案是土耳其，其死亡率很高，其次是波兰、俄罗斯、巴基斯坦和南非。

and South Africa and these were the results of the Swedish students I did that so I got the confidence interval which was pretty narrow and I got happy of course at

这是瑞典学生的结果。我计算出了置信区间，范围相当窄，当然我也很高兴。

one point eight right answer out of five possible that means that there was a place for a professor of international health and for my course but one life late night when

平均每人答对 1.8 题（共 5 题），这意味着国际健康教授职位和我的课程确实还有存在的空间。但有一天深夜，当我……

I was compiling the report I really realized my discovery I have shown that Swedish top students know statistically significantly less about the world than the chimpanzees because the chimpanzee would score

正在整理报告时，我真的意识到了我的发现：我已证明，瑞典顶尖学生关于世界的知识在统计上显著少于黑猩猩，因为如果给黑猩猩两个香蕉作为奖励，让它从斯里兰卡和土耳其中选一个，它也能答对一半的情况。

half right if I gave him two bananas with Sri Lanka and Turkey they would be right half of the cases but the students are not there the problem for me was

但学生们并没有达到那个水平。对我来说，问题不在于无知，而在于先入为主的观念。