Data Science Data Science Trivia Question and Answers 2

Question 1

What does the acronym 'ETL' stand for in data engineering?

Accepted Answer

Extract, Transform, Load

Answer

ETL stands for Extract, Transform, Load, which describes the process of pulling data from sources, transforming it into a usable format, and loading it into a destination system.

Question 2

Which Python library is primarily used for creating static, animated, and interactive visualizations?

Accepted Answer

Matplotlib

Answer

Matplotlib is the foundational Python plotting library used to create a wide range of static, animated, and interactive visualizations.

Question 3

What type of machine learning algorithm is K-Means?

Accepted Answer

Unsupervised clustering

Answer

K-Means is an unsupervised clustering algorithm that partitions data into K distinct groups based on feature similarity without using labeled outcomes.

Question 4

In statistics, what does a p-value less than 0.05 typically indicate?

Accepted Answer

The result is statistically significant

Answer

A p-value below 0.05 conventionally indicates that the observed result is statistically significant, meaning there is less than a 5% probability it occurred by chance alone.

Question 5

What is the purpose of cross-validation in model evaluation?

Accepted Answer

To assess how well a model generalizes to unseen data

Answer

Cross-validation splits data into multiple folds to train and test a model repeatedly, providing a reliable estimate of how it will perform on new, unseen data.

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Data Science Practice Test

Data Science Data Science Trivia Question and Answers 2