Exercise 1. - Getting and Knowing your Data

This time we are going to pull data directly from the internet. Special thanks to: https://github.com/justmarkham for sharing the dataset and materials.

Check out Occupation Exercises Video Tutorial to watch a data scientist go through the exercises

Step 1. Import the necessary libraries¶

Step 2. Import the dataset from this address.¶

Step 3. Assign it to a variable called users and use the ‘user_id’ as index¶

Step 4. See the first 25 entries¶

Step 5. See the last 10 entries¶

Step 6. What is the number of observations in the dataset?¶

Step 7. What is the number of columns in the dataset?¶

Step 8. Print the name of all the columns.¶

Step 9. How is the dataset indexed?¶

Step 10. What is the data type of each column?¶

Step 11. Print only the occupation column¶

Step 12. How many different occupations are in this dataset?¶

Step 13. What is the most frequent occupation?¶

Step 14. Summarize the DataFrame.¶

Step 15. Summarize all the columns¶

Step 16. Summarize only the occupation column¶

Step 17. What is the mean age of users?¶

Step 18. What is the age with least occurrence?¶