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Installing R and RStudio1 Lesson2 Quizzes
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The RStudio IDE1 Lesson2 Quizzes
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Coding Basics1 Lesson2 Quizzes
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Assignment | Workshop 11 Quiz
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Data dive: Ebola in Sierra Leone1 Lesson2 Quizzes
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RStudio Projects1 Lesson2 Quizzes
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Workshop 21 Lesson1 Quiz
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Using R Markdown1 Lesson2 Quizzes
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Data classes & structures (deprec)2 Lessons
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Workshop 31 Lesson1 Quiz
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Select & rename1 Lesson3 Quizzes
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Filter1 Lesson3 Quizzes
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Workshop 41 Quiz
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Mutate1 Lesson3 Quizzes
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Workshop 51 Lesson1 Quiz
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Conditional mutate1 Lesson3 Quizzes
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Group by and summarize1 Lesson2 Quizzes
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Workshop 61 Lesson1 Quiz
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Other grouped operations1 Lesson2 Quizzes
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Workshop 71 Lesson1 Quiz
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Intro to ggplot21 Lesson2 Quizzes
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Scatter plots and smoothing1 Lesson2 Quizzes
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Workshop 81 Lesson1 Quiz
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Lines, scales, and labels1 Lesson2 Quizzes
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Overview of the EpiGraphHub web platform
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Data exploration on EpiGraphHub1 Quiz
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Workshop 91 Lesson1 Quiz
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Workshop 101 Lesson1 Quiz
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Final project1 Lesson1 Quiz
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Getting help1 Lesson1 Quiz
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Quiz contributions16 Lessons
Participants 76
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Lesson code
To work on the practice questions in the data wrangling module, you need to download the project folder for the lesson. Click on one of the buttons below to download this folder as a zip file.
Click the first option if you are working on RStudio on your local computer. Click the second option If you are using RStudio cloud.
If you are working on your local computer, you should then:
- Unzip the folder
- Double-click on the Rstudio Project file to open the project in RStudio
- Open the Rmd lesson from the Files tab in RStudio, and follow along!
If you are working on RStudio cloud, you should then:
- Start a new project on RStudio Cloud
- Upload the zip file you just downloaded to the Files tab of RStudio.
- Open the Rmd lesson, again in the Files tab in RStudio, then follow along!
Lesson notes
The written guide below is an accompaniment to the lesson video. You may read through it if you prefer written tutorials to video content.
Hello, I am kindly inquiring why I am unable to see the table in the console to answer the questions in the quiz for the mock data set. I keep getting this but no table
> mock_data_set %>% select(ends_with("_a")) # A tibble: 10 × 0Hi Margaret, thanks for including your code and the output from the console. This output: # A tibble: 10 × 0 is telling us that the table you have generated contains 10 rows and 0 columns. It looks like no columns were selected. Is it possible that none of the column names in… Read more »
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Note for terminology, “infected with COVID-19” isn’t quite right.
As far as the rename() function, it also to make it easier to select with “startswith” or “endswith” if you want to categorize certain variables.
Thank you very much Laure for this video lesson. I think it was quite clear and I’m glad you do not answer the practice questions in the video, as this gives us more incentive to test it ourselves 🙂 A couple of points: In minute ~2, I think you mix up rows with… Read more »
Thank you Saif! We looked into the issue with the answered questions, and are unsure of the source. But should be fixed now. (Note that the *first* question in each of those lessons is answered).
And we’ve added a pop-up correction at 02:03. Thanks for catching that!