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Data Manipulation in R

Final Quiz
1. Introduction & Exercise 1

Instruction

Welcome to the last part of this course – the Final Quiz. The goal for this part is to check your understanding of the data importing and cleaning process.

For this quiz, let's imagine we work at a pharmaceutical supplier and we need to prepare a summary for management. Ready? Let's get started!

Let's take a look at our orders data frame. It has the following columns:

  • id – the ID of order.
  • company_name – the client company's name.
  • product_name – the product(s) ordered.
  • price – the price (with currency) of the order.
  • date_shipped – the order's shipped date.
  • date_arrival – the order's arrival date.

Exercise

Use the head() function on the orders data frame.