Output formats (HTML, PDF, Word) in R Programming - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this R code generating an HTML report?

Consider this R code snippet that uses rmarkdown to create an HTML report. What will be the output file format?

R Programming

library(rmarkdown)
rmarkdown::render('report.Rmd', output_format = 'html_document')

A A PDF file named 'report.pdf' is created

B No file is created; this code only prints to console

C A Word document named 'report.docx' is created

D An HTML file named 'report.html' is created

💡 Hint

Check the output_format argument in the render function.

The render function with output_format = 'html_document' creates an HTML file with .html extension.

❓ Predict Output

intermediate

What output file is generated by this R code for PDF?

Given this R code snippet, what output file will be created?

R Programming

library(rmarkdown)
rmarkdown::render('analysis.Rmd', output_format = 'pdf_document')

A A PDF file named 'analysis.pdf' is created

B A Word document named 'analysis.docx' is created

C An HTML file named 'analysis.html' is created

D No file is created; the code only previews the report

💡 Hint

Look at the output_format parameter value.

The 'pdf_document' output format creates a PDF file with .pdf extension.

❓ Predict Output

advanced

What is the output file when rendering to Word format?

What file does this R code create?

R Programming

library(rmarkdown)
rmarkdown::render('summary.Rmd', output_format = 'word_document')

A An HTML file named 'summary.html' is created

B A Word document named 'summary.docx' is created

C A PDF file named 'summary.pdf' is created

D The code throws an error because 'word_document' is invalid

💡 Hint

Check the output_format argument for Word documents.

The 'word_document' output format creates a Word file with .docx extension.

🧠 Conceptual

advanced

Which output format supports interactive HTML widgets in R Markdown?

You want to include interactive plots in your report. Which output format should you choose?

A md_document

B word_document

C html_document

D pdf_document

💡 Hint

Interactive widgets need a web-based format.

Only 'html_document' supports interactive HTML widgets like plotly or leaflet.

❓ Predict Output

expert

What error occurs when rendering to PDF without LaTeX installed?

What happens if you run this code on a system without LaTeX installed?

R Programming

library(rmarkdown)
rmarkdown::render('report.Rmd', output_format = 'pdf_document')

A Error: LaTeX installation not found. Please install LaTeX to generate PDF

B Error: pandoc document conversion failed with error 43

C The PDF file is created successfully

D The code runs but produces an empty PDF file

💡 Hint

PDF generation requires LaTeX software installed on your computer.

Without LaTeX, rmarkdown cannot create PDFs and shows an error about missing LaTeX.