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Which Python library is primarily used for data manipulation and analysis, offering tools for reshaping, merging, and aggregating datasets?
In SQL, which type of JOIN will return all rows from the left table and the matching rows from the right table, filling with NULLs where there is no match?
A retail chain wants to predict next month's sales based on historical data and seasonal trends. Which of the following methods is the most suitable for...
In a real-time video conferencing application, users report delays and poor video quality. Which QoS mechanism would most effectively address the issue?
Which of the following is the correct decomposition of time series data into its components?
When dealing with data from a social media platform that includes posts, images, and metadata, what type of data format is this dataset classified as?
What is the result of the following SQL query?
SELECT department, COUNT (employee_id)
FROM employees GROUPBY department HAVING COUNT (e...Which technique best ensures that data storytelling is impactful for business stakeholders?
A dataset contains "USA," "United States," and "U.S." as country entries. What is the best way to resolve these inconsistencies?
Which of the following best represents semi-structured data?
