Apache Spark 3 for Data Engineering and Analytics with Python - Challenge Part 3 - Q3 When to Advertise

The video tutorial addresses the complex question of determining the optimal time to display advertisements to maximize product sales. It involves setting up a data analysis environment, checking for duplicate order IDs, and grouping data by hour to identify peak sales times. The analysis reveals that the best times to advertise are between 7:00-8:00 PM and 11:00-12:00 AM. The tutorial concludes with visualizing the data using a line plot to aid decision-making for advertisement timing.

What is the main objective of determining the optimal time to display advertisements?

• To improve customer satisfaction

• To increase website traffic

• To maximize product sales

• To reduce advertising costs

Which library is used for data manipulation in the tutorial?

• NumPy

• Pandas

• PySpark

• Matplotlib

What is the first step in setting up the environment for data analysis?

• Loading the data

• Importing libraries

• Creating a heading

• Visualizing the data

Why is it important to identify duplicate order IDs in the sales data?

• To improve data visualization

• To reduce data size

• To ensure accurate data analysis

• To increase the number of orders

What is the purpose of grouping order IDs by each hour of the day?

• To identify customer demographics

• To calculate total revenue

• To find the most popular products

• To determine peak sales hours

How is the hour extracted from the order date in the data?

• Using a custom function

• Using a string split method

• Using a date format function

• Using a regular expression

Which time periods were identified as optimal for advertising?

• Late night and early morning

• Evening and late night

• Afternoon and evening

• Morning and afternoon

What type of plot is used to visualize the sales data?

• Scatter plot

• Pie chart

• Bar plot

• Line plot

What is the significance of converting the Spark DataFrame to a Pandas DataFrame?

• To enhance data security

• To reduce data size

• To enable data visualization

• To improve data accuracy

What is the final recommendation for the Board of Directors regarding advertisement timing?

• Advertise in the morning and evening

• Advertise during lunch hours

• Advertise throughout the day

• Advertise only on weekends