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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.

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Alhassane

Very good presentation! 😊

Axel

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 »

Joy

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″

Axel

Dear Joy, your answer isn’t clear. can you explain more on it?

Edgar

Hi Joy/Axel, for me this does not work either. It might have to do with the tabyl output, which actually is in the unit proportion, not unit percentage.

Sabina

Hi Edgar! Thank you for your message. I believe what Joy meant to say is that you SHOULDN’T assign the tabyl() table to the object “Q_age_group_percentage”. Instead, what we recommend you to do is to execute the code to see the table created with tabyl() AND THEN assign the correct value in percentage… Read more »

Joy

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.

Axel

for this,it’s ok. I have modified it. Thank you.

Ngwa

Thank you for the lesson

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