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R for Busy People (Cohort-0)
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Installing R and RStudio1 Lesson|2 Quizzes
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The RStudio IDE1 Lesson|2 Quizzes
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Coding Basics1 Lesson|2 Quizzes
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Assignment | Workshop 11 Quiz
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Data dive: Ebola in Sierra Leone1 Lesson|2 Quizzes
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RStudio Projects1 Lesson|2 Quizzes
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Workshop 21 Lesson|1 Quiz
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Using R Markdown1 Lesson|2 Quizzes
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Data classes & structures (deprec)2 Lessons
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Workshop 31 Lesson|1 Quiz
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Select & rename1 Lesson|3 Quizzes
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Filter1 Lesson|3 Quizzes
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Workshop 41 Quiz
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Mutate1 Lesson|3 Quizzes
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Workshop 51 Lesson|1 Quiz
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Conditional mutate1 Lesson|3 Quizzes
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Group by and summarize1 Lesson|2 Quizzes
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Workshop 61 Lesson|1 Quiz
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Other grouped operations1 Lesson|2 Quizzes
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Workshop 71 Lesson|1 Quiz
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Intro to ggplot21 Lesson|2 Quizzes
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Scatter plots and smoothing1 Lesson|2 Quizzes
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Workshop 81 Lesson|1 Quiz
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Lines, scales, and labels1 Lesson|2 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 Lesson|1 Quiz
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Workshop 101 Lesson|1 Quiz
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Final project1 Lesson|1 Quiz
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Getting help1 Lesson|1 Quiz
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Quiz contributions16 Lessons
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Quiz contributions: The RStudio IDE
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Quiz contributions: Coding basics
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Quiz contributions: Data dive | Ebola in Sierra Leone
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Quiz contributions: RStudio Projects
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Quiz contributions: R Markdown
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Quiz contributions: Data classes & structures
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Quiz contributions: Select & rename
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Quiz contributions: Filter
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Quiz contributions: Mutate
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Quiz contributions: Conditional mutate
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Quiz contributions: Group by and summarize
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Quiz contributions: Other grouped operations
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Quiz contributions: Pivoting data
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Quiz contributions: Intro to ggplot2
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Quiz contributions: Scatter plots and smoothing
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Quiz contributions: Lines, scales and labels
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Quiz contributions: The RStudio IDE
Participants 76
Topic 16 of 31
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Conditional mutate
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Lesson code
Please download the zip folder below to code along with the instructor.
You need to unzip this folder to code along. Or “Extract All” on Windows. See our video explanation of this if you are unsure.
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.
Topic Content
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Very good presentation! 😊
Hello everyone. I would ask a clarification about my code. I have met challenges when I want to execute the code related on pratice 1 and pratice 5. Code pratice 1 : {r eval = FALSE} # Enter your answer as a WHOLE number without quotes: Q_age_group_percentage <- flu_linelist %>% mutate(age_group = case_when(age… Read more »
Hi Axel, for the first question, you are assigning the entire table to the object “Q_age_group_percentage”. You should generate the table by itself, and then assign only the desired number to the object. For example, if your answer is 61, then you can put “Q_age_group_percentage <- 61″
Dear Joy, your answer isn’t clear. can you explain more on it?
For practice question 5, you’re quite close to the correct answer. It looks like you are missing the word “to” in “Recruit to Jiangsu study” and “Recruit to Zhejiang study”. If you fix those two text strings, you should get the correct answer.
for this,it’s ok. I have modified it. Thank you.
Thank you for the lesson