Literary analysis

Let's look at the book rating data again. You've been tasked with finding out more information about this data that you couldn't calculate before. You need to find the total number of ratings used to create this dataset and how old is the oldest book.

The DataFrame df_books is available in your environment.

Это упражнение является частью курса

Introduction to Julia

Посмотреть курс

Инструкции к упражнению

Use the sum() function to find the total of the ratings_count column.
Use the minimum() function to find the minimum value in the original_publication_year column.

Интерактивное практическое упражнение

Попробуйте выполнить это упражнение, дополнив этот пример кода.

# Find the total number of ratings
total_reviews = ____(____)

# Find the earliest publication year
earliest_year = ____(____)

println("Total number of reviews is $total_reviews")
println("Earliest year of publication is $earliest_year")

Редактировать и запускать код