EDA Python - 17-Pandas_1

The video tutorial covers the use of Python libraries such as NUMpy, pandas, OS, and URLLib to handle and analyze COVID-19 data from the WHO website. It demonstrates how to create directories, download data, and save it locally using the OS and URLLib modules. The tutorial then explores loading data into pandas, examining its structure, and performing various data manipulation and analysis techniques. It emphasizes the importance of efficient data handling to avoid repeated downloads and showcases pandas' powerful data selection and analysis capabilities.

What is the primary purpose of using the OS module in the context of this tutorial?

• To create a graphical user interface

• To manage file paths and directories

• To send HTTP requests

• To perform mathematical calculations

Why is it beneficial to save data locally instead of downloading it every time?

• To reduce network traffic and speed up data access

• To ensure data is always up-to-date

• To prevent data corruption

• To avoid using disk space

What does the 'head' method in Pandas do?

• Sorts the DataFrame by index

• Deletes the first five rows of a DataFrame

• Returns the first five rows of a DataFrame

• Returns the last five rows of a DataFrame

How can you select a specific column in a Pandas DataFrame?

• Using the 'select' function

• Using square brackets with the column name

• Using the 'column' method

• Using the 'get' function

What does the 'describe' method in Pandas provide?

• A summary of non-numeric data

• A detailed report of all data types

• Statistical summary of numeric columns

• A list of all unique values in the DataFrame

Which method is used to filter rows based on a condition in Pandas?

• loc[]

• where()

• filter()

• select()

How can you add a new column to a Pandas DataFrame?

• Using the 'add_column' method

• By using the 'append' method

• Using the 'insert' function

• By assigning a value to a new column name

What is the purpose of using a mask in Pandas?

• To change the data type of a column

• To filter data based on conditions

• To rename columns

• To hide certain columns

What does the 'drop' method do in a Pandas DataFrame?

• Duplicates the DataFrame

• Sorts the DataFrame

• Removes specified rows or columns

• Adds new rows to the DataFrame

How can you check for negative values in a DataFrame column?

• By using the 'is_negative' method

• Using the 'negative' method

• By applying a condition with '< 0'

• Using the 'check_negative' function