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In a function docstring, the section that describes what the function returns is called __.

What is the scope of a variable created inside a function?

In the function call calculate_tax(amount=100, rate=0.07), what type of arguments are being used?

What does the lambda function lambda x, y: x + y return when called with arguments 5 and 3?

What is the scope of a variable created inside a function?

In the function call calculate_tax(amount=100, rate=0.07), what type of arguments are being used?

What does np.zeros((2, 4)) create?

A retail company has daily sales data stored in a NumPy array. Explain how you would use NumPy to calculate the average daily sales, find the day with maximum sales, and identify how many days had sales above a certain threshold. Why would NumPy be faster than using Python loops for these calculations?

Given a 2D array, what does axis=1 refer to when using aggregation functions?

A company tracks website performance with a (30, 24) array representing 30 days of hourly page views. Explain how you would use NumPy to: (1) find the day with the highest total traffic, (2) calculate the average traffic for each hour of the day, and (3) identify all hours that exceeded 1000 views.