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Which of the following is a typical “Business Use Case” for a Probability Mass Function (PMF)?

What are the two numerical data types?

What is the primary goal or essence of causal inference? 

If a business analyzes customer wait times and finds a “Positively skewed” distribution, what does this reality typically mean?

If you only want to know the average income increase for “those who actually attended college,” which metric should you measure?

A drop in temperature causes both thermal wear and hot pot sales to rise, though they do not cause each other. Which structure is this?

You are a Data Scientist at ABC Company analyzing the “Delivery Delay” (the difference between estimated and actual delivery time) for three different shipping carriers over the last quarter. You have calculated the Skewness for each carrier’s delay distribution. Carrier Mean Delay (min) Median Delay (min) Skewness Value Carrier A 12.5 12.4 0.05 Carrier B 22.1 15.0 2.40 Carrier C 5.2 8.5 -1.85 Based on the table above, which carrier’s delivery data is the most “Symmetric”, suggesting that their delays are predictable and follow a bell-like curve?

A distribution is considered generally “Symmetrical” if its skewness falls between -0.5 and 0.5.

A data scientist needs to store a single-dimensional sequence of temperature readings taken every hour for a day. What is the most appropriate data structure for this linear collection of the same data type?

You are merging two customer databases. In Database A, a customer is listed as “John Brown” at “123 Maple St.” In Database B, the same person is “J. Brown” at “123 Maple Street, Apt 4.” To successfully perform deduplication and merge these records into a single “Golden Record,” which step should your pipeline perform first?