What differentiates big data from traditional data in terms of its defining characteristics?
In Python, which method in the Pandas library would you use to replace NaN values in a DataFrame with the median value of each column?
A company is analyzing customer feedback to classify it into two groups: "Positive" and "Negative." What type of data and analysis is being employed?
Which layer in the OSI model is responsible for end-to-end communication and error-free delivery of data between hosts?
Which of the following SQL queries will return the second highest salary from a table Employee with columns Name and Salary?
What is the primary advantage of using a box plot for data visualization?
Which of the following best demonstrates encapsulation in Object-Oriented Programming (OOP)?
Which of the following best represents semi-structured data?
Which of the following best explains the role of an independent variable in data analysis?
What is a key difference between random sampling and non-random sampling?
