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---
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title: "课后作业8"
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title: "课后作业7"
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subtitle: 《区域水环境污染数据分析实践》<br>Data analysis practice of regional water environment pollution
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author: 苏命、王为东<br>中国科学院大学资源与环境学院<br>中国科学院生态环境研究中心
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date: today
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@ -35,12 +35,12 @@ require(tidyverse)
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require(learnr)
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```
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## 第8次课后作业
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## 第7次课后作业
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1. 根据`airqualitydf.xlsx`,按采样点统计白天(8:00-20:00)与夜晚(20:00-8:00)中空气质量指数(AQI)中位数,按城市统计低于所有采样点AQI30%分位值的采样点占比,列出上述占比最高的10个城市(不考虑采样点数低于5个的城市)。
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2. 按照不同城市分组,统计白天与夜晚AQI中位数是否具有显著差异。
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作业模板:[第8次课后作业_模板.qmd](https://drwater.rcees.ac.cn/git/course/RWEP/raw/branch/main/SD/20240328_9_课后作业/第8次课后作业_模板.qmd)
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作业模板:[第7次课后作业_模板.qmd](https://drwater.rcees.ac.cn/git/course/RWEP/raw/branch/main/SD/20240326_9_课后作业/第7次课后作业_模板.qmd)
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## 欢迎讨论!{.center}
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---
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title: 课后作业8
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title: 课后作业7
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author: 姓名
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format: html
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---
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@ -24,7 +24,7 @@ website:
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page-navigation: true
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page-footer: "Copyright 2024, [Ming Su](https://drwater.rcees.ac.cn)"
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navbar:
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background: "grey"
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background: "light"
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search: true
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right:
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- icon: house
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@ -19,4 +19,4 @@ subtitle: "课程简介"
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- 网页公开:[https://drwater.rcees.ac.cn/course/public/RWEP/\@PUB/index.html](https://drwater.rcees.ac.cn/course/public/RWEP/@PUB/index.html)
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- 课件代码:[https://drwater.rcees.ac.cn/git/course/RWEP.git](https://drwater.rcees.ac.cn/git/course/RWEP.git)
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- 代码web界面:[https://on.tty-share.com/s/KHxahtDKk7EIIMFFA60dQfh4-YgnWkkXRjzkaFV_7pSj96kDw_VxTC6Qa76UpG4Yee8/](https://on.tty-share.com/s/KHxahtDKk7EIIMFFA60dQfh4-YgnWkkXRjzkaFV_7pSj96kDw_VxTC6Qa76UpG4Yee8/)
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- 代码web界面:[https://on.tty-share.com/s/ny3JVrMuvUNOmnuioS3I7YEeVCi5Hk3Qc9vgz2QdX0FE2cYAQZFW2MUOkQyG0P5ZUR8/](https://on.tty-share.com/s/ny3JVrMuvUNOmnuioS3I7YEeVCi5Hk3Qc9vgz2QdX0FE2cYAQZFW2MUOkQyG0P5ZUR8/)
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