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Week2-6-Querying a DataFrame
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      [1] Week1-1-Introduct...
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      03:55
      Week1-1-Introduction
      [2] Week1-2-About the...
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      01:25
      Week1-2-About the Professor
      [3] Week1-3-Data Scie...
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      07:33
      Week1-3-Data Science
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      Week1-4-The Coursera Jupyter Notebook System
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      [11] Week1-11-Advanced...
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      [12] Week1-12-Advanced...
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      07:38
      Week1-12-Advanced Python Demonstration
      [13] Week2-1-Introduct...
      1474播放
      02:55
      Week2-1-Introduction
      [14] Week2-2-The Serie...
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      Week2-2-The Series Data Structure
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      [16] Week2-4-The DataF...
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      Week2-4-The DataFrame Data Structure
      [17] Week2-5-DataFrame...
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      Week2-5-DataFrame Indexing and Loading
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      待播放
      Week2-6-Querying a DataFrame
      [19] Week2-7-Indexing ...
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      05:24
      Week2-7-Indexing Dataframes
      [20] Week2-8-Missing V...
      581播放
      04:54
      Week2-8-Missing Values
      [21] Week3-1-Merging D...
      951播放
      07:42
      Week3-1-Merging Dataframes
      [22] Week3-2-Pandas Id...
      927播放
      06:33
      Week3-2-Pandas Idioms
      [23] Week3-3-Group by
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      Week3-3-Group by
      [24] Week3-4-Scales
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      07:28
      Week3-4-Scales
      [25] Week3-5-Pivot Tab...
      1465播放
      02:25
      Week3-5-Pivot Tables
      [26] Week3-6-Date Func...
      748播放
      05:08
      Week3-6-Date Functionality
      [27] Week4-1-Introduct...
      1244播放
      01:13
      Week4-1-Introduction
      [28] Week4-2-Distribut...
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      04:13
      Week4-2-Distributions
      [29] Week4-3-More Dist...
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      08:17
      Week4-3-More Distributions
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      Week4-4-Hypothesis Testing in Python（上）
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