Intro to the Tidyverse Autograder (Koan 7: left_join)

Before grading: Enter your name.

Your name (for Q1)

Q1 depends on your name. Enter your first name and last name (used for pattern checks only).

First name
Last name

Koan 7: left_join

Paste your full Koan 7 R script below, then click Grade.

Score: 0 / 7 0%

All done

You got 100% on Koan 7. Download your 1-page completion PDF.

This grader does not execute R. It checks structure only. Spacing and line breaks do not matter.