| 1. | Twitter Trending This Week: Worldwide (March 8 - 15, 2020) | 3 | |
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| 2. | Twitter Trending This Week: USA (March 15 - 22, 2020) | 4 | |
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| 3. | Twitter Trending This Week: Worldwide (March 1- 8, 2020) | 4 | |
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| 4. | U.S. Major Sports League Worldwide Web Search Volume (01/2004 - 10/2019) | 5 | |
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| 5. | Twitter Trending This Week: USA (March 8 - 15, 2020) | 5 | |
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| 6. | Twitter Trending This Week: USA (March 1- 8, 2020) | 7 | |
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| 7. | Spider-Man Spider Chart Pumpkin | 9 | |
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| 8. | Twitter Trending This Week: Worldwide (March 15 - 22, 2020) | 9 | |
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| 9. | March Madness Total Team Wins (1939-2019) | 10 | |
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| 10. | How to Read csv Data Into R | 12 | Guide |
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| 11. | Coronavirus New US Cases by State April 1 - May 5 | 12 | |
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| 12. | Stock Market Crash History: 15 Worst Weeks for the Dow | 13 | |
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| 13. | The Meta MOOC: Getting the Most out of Online Learning | 14 | |
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| 14. | stringr: Viewing Strings | 14 | Tutorial |
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| 15. | Kobe Bryant Shot Charts by Game Minute | 14 | |
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| 16. | How to Rename Columns in Pandas (Python) | 16 | Guide | Columns
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| 17. | stringr: Sorting Strings | 16 | |
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| 18. | Welcome To DataDaft | 16 | Tutorial |
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| 19. | Coronavirus New Cases by State (USA: March 2020) | 16 | |
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| 20. | What Is Machine Learning? | 18 | |
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| 21. | How to Generate Sequences in R | 32 | Guide |
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| 22. | Introduction to R: Preparing Numeric Data | 20 | |
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| 23. | How to Subset a Data Frame by a Column in R | 21 | Guide |
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| 24. | How to Join Data Frames in Pandas (Python) | 22 | Guide |
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| 25. | stringr: Subset and Replace Strings | 22 | Tutorial |
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| 26. | Introduction to R: Chi-Squared Tests | 22 | |
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| 27. | Game of Thrones: Balance of Power Over Time | 29 | |
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| 28. | stringr: String Interpolation | 24 | Tutorial |
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| 29. | How to Make Boxplots in R | 24 | Tutorial |
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| 30. | Python Regex: How To Match All Whitespace | 25 | Guide |
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| 31. | How to Spread Columns in Pandas (Python) | 26 | Guide |
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| 32. | Introduction to R: ANOVA | 27 | |
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| 33. | How to Check the First and Last Rows of a Data Frame in Pandas (Python) | 27 | Guide |
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| 34. | Coronavirus New Cases per Day by Country (April 10) | 28 | |
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| 35. | How to Remove a Column From a Data Frame in Pandas (Python) | 29 | |
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| 36. | stringr: Split and Join Strings | 30 | Tutorial |
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| 37. | How to Do Elementwise Math in Python | 30 | Guide |
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| 38. | How to Gather Columns in Pandas (Python) | 31 | Guide |
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| 39. | How To Make a While Loop in Python | 47 | |
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| 40. | Introduction to R: Logistic Regression | 33 | Vlog |
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| 41. | How To Use applymap() In Pandas (Python) | 34 | Guide |
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| 42. | Introduction to R: Exploring and Preparing Data | 35 | |
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| 43. | Introduction to R: Working with Text Data | 35 | |
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| 44. | dlpyr: rename and arrange | 35 | Let's Play |
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| 45. | How to Access Columns by Name in Pandas (Python) | 35 | Guide |
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| 46. | Introduction to R: Plotting in Base R | 37 | |
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| 47. | How To Add Text To a Plot in R | 37 | Guide |
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| 48. | How to Select Rows Based on a Logical Condition in Pandas (Python) | 37 | Vlog |
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| 49. | How to Reverse Data in R | 38 | Guide |
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| 50. | Get the Sum of Each Column in R | 38 | |
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| 51. | How to Select Columns Based on a Logical Condition in Pandas (Python) | 38 | Vlog |
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| 52. | dplyr: Getting Started | 38 | |
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| 53. | Introduction to R: Plotting with ggplot2 | 39 | |
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| 54. | 100M Olympic Medal Winning Times (1896-2020) | 47 | |
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| 55. | Introduction to R: Control Flow | 40 | |
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| 56. | Top 15 MMA Fighters Over Time Ranked by Elo (1980-2020) | 41 | |
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| 57. | What Is Data Science? | 42 | |
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| 58. | How to Access Rows by Name in Pandas (Python) | 42 | Guide |
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| 59. | COVID-19 New Cases UPDATED (March 20) | 43 | Vlog |
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| 60. | How To Use rep() in R | 44 | Guide |
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| 61. | Introduction to R: Reading and Writing Data | 44 | |
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| 62. | How to Make a For Loop in Python | 69 | Guide |
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| 63. | dplyr: select | 45 | |
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| 64. | How to Sort a Data Frame by a Column in Pandas | 45 | Guide |
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| 65. | Introduction to R: Variables | 45 | |
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| 66. | Introduction to R: Linear Regression | 45 | |
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| 67. | Introduction to R: Functions | 46 | |
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| 68. | How To Apply a Function to Each Column in R | 46 | Guide |
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| 69. | Introduction to R: T-Tests (Hypothesis Testing) | 46 | |
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| 70. | Python Regex: How To Replace All Substrings In a String | 49 | Guide |
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| 71. | How to Combine and Split Strings in R | 49 | Guide |
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| 72. | New Anime Popularity (2018-2020) | 50 | |
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| 73. | Python Programming Practice: LeetCode #58 -- Length of Last Word | 51 | |
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| 74. | How To Add Points To a Plot in R | 51 | Guide |
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| 75. | Introduction to R: Atomic Data Types | 53 | |
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| 76. | Algorithms Explained: What is an Algorithm? | 54 | |
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| 77. | Get the Sum of Each Row in R | 55 | |
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| 78. | Algorithms Explained: Memory Complexity | 57 | |
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| 79. | How to Make a Donut Chart in R | 59 | Guide |
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| 80. | How to Remove Duplicate Rows From a Data Frame in Pandas (Python) | 59 | Guide |
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| 81. | How to Access Rows by Numeric Index in Pandas (Python) | 59 | Guide |
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| 82. | stringr: String Matching | 59 | Tutorial |
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| 83. | Songs of the 2000s: All #1 Hits | 60 | |
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| 84. | How to Select a Column in R | 61 | Tutorial |
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| 85. | Introduction to R: Descriptive Statistics | 61 | |
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| 86. | Coronavirus New Cases per Day by Country (March 13) | 62 | |
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| 87. | Introduction to R: R Arithmetic | 62 | |
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| 88. | dplyr: filter | 62 | |
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| 89. | How to Concatenate Data Frames in Pandas (Python) | 63 | Guide |
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| 90. | How to Access Columns by Numeric Index in Pandas (Python) | 65 | Guide |
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| 91. | Top 150 One Piece Characters by Panel Appearances (Through Chapter 1000) | 65 | |
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| 92. | Introduction to R: Data Frames | 69 | |
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| 93. | Introduction to R: Random Forests | 69 | |
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| 94. | Python for Data Analysis: Random Forests | 70 | |
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| 95. | stringr: Basic String Manipulation | 71 | |
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| 96. | Introduction to R: Matrices | 74 | |
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| 97. | Python for Data Analysis: Joining Data | 74 | |
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| 98. | Songs of the 90s: All #1 Hits | 74 | |
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| 99. | How to Use **kwargs in Python | 132 | Guide |
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| 100. | How to Make a Scatterplot in R | 76 | Tutorial |
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