HTC Global Services Data Scientist Interview Questions and Answers for Experienced

PCA is a dimensionality reduction technique, decision tree is a classification algorithm, and computer vision is a field of study focused on enabling computers to interpret and understand visual information.

• PCA is used to reduce the number of variables in a dataset while retaining the most important information.

• Decision trees are used to classify data based on a set of rules and conditions.

• Computer vision involves usin...read more

Data science is the field of extracting insights and knowledge from data using various techniques and tools.

• Data science involves collecting, cleaning, and analyzing data to extract insights.

• It uses various techniques such as machine learning, statistical modeling, and data visualization.

• Data science is used in various fields such as finance, healthcare, and marketing.

• Examples of data science applications include fraud...read more

Python and R are programming languages commonly used in data science and statistical analysis.

• Python is a general-purpose language with a large community and many libraries for data manipulation and machine learning.

• R is a language specifically designed for statistical computing and graphics, with a wide range of packages for data analysis and visualization.

• Both languages are popular choices for data scientists and hav...read more