List of top Data Science Questions asked in WBBSE XII

What are the key principles of Effective Data Visualization?
When should you use a Box Plot versus a Bar Chart?
Explain the concept of Data Normalization and why it is used in scaling features.
How do you perform a Join and Merge operation on two different datasets in Python?
Define Mean, Median, and Mode and explain which is most affected by outliers.
What is a Hypothesis Test, and what do the Null and Alternative hypotheses represent?
What is a DataFrame in Pandas, and how does it differ from a Series?
Explain the steps involved in Data Wrangling and why it is essential before analysis.
What is Data Cleaning, and how do you handle missing values in a dataset?
What is the difference between Structured, Semi-structured, and Unstructured data?
Describe the Data Science Lifecycle from data collection to deployment.