EDA Python - 19-Pandas_3

The video tutorial covers data analysis using Python, focusing on loading, cleaning, and transforming data with pandas. It demonstrates how to use pivot tables for data transformation and create visualizations using both pandas and Matplotlib. The tutorial also includes specific analysis of COVID-19 data, particularly focusing on the UK and top five countries by case count. It concludes with efficient methods for loading and saving data.

What is the purpose of using the OS module in the notebook?

• To import data from CSV files

• To create file paths independent of the operating system

• To style the plots

• To execute Python scripts

How is whitespace removed from column headings in a DataFrame?

• By converting the column to a string

• By reloading the DataFrame

• Using the strip method in a list comprehension

• Using the replace method

What is the benefit of converting a column to a datetime data type?

• It allows for time series analysis

• It reduces memory usage

• It improves data accuracy

• It changes the data format to string

What does the pivot function in Pandas do?

• It filters the DataFrame

• It merges two DataFrames

• It sorts the DataFrame

• It reshapes the DataFrame by turning unique values into columns

Which library provides more granular control over plot appearance?

• Pandas

• NumPy

• Matplotlib

• SciPy

How can you create a horizontal bar chart in Matplotlib?

• Using the plot function

• Using the barh function

• Using the scatter function

• Using the line function

What is the purpose of using a mask in data filtering?

• To filter data based on a condition

• To highlight data

• To sort data

• To merge data

How can you plot data with two different Y-axes in Matplotlib?

• Using the multi function

• Using the double function

• Using the dual function

• Using the twin function

What is the advantage of saving a DataFrame to a CSV file?

• It enables data encryption

• It improves data accuracy

• It reduces file size

• It allows for data sharing

What does the percentage change function calculate?

• The average of values

• The cumulative sum of values

• The percentage change between consecutive values

• The absolute change in values