When creating a line chart with Matplotlib, which function is most appropriate to add a text label at a specific data point?
When analyzing a dataset of customer ages, you calculate the mean, median, and mode. What does it indicate if all three values are approximately equal?
What is the most appropriate way to ensure that a column used as a foreign key contains only valid references to a parent DataFrame in Pandas?
What is the primary goal of pre-processing data before performing analysis?
Which packages are most commonly used together in a data science workflow for data manipulation and visualization?
(Choose two)
What is the primary advantage of using web scraping as a data collection method in business analytics?