Data Science Quiz

What is the primary focus of Data Science?

• Visualizing data only

• Collecting data from social media

• Analyzing data for decision making

• Storing data in databases

Which of the following is NOT a role in Data Science?

• Data Scientist

• Data Engineer

• Data Architect

• Web Developer

What is the purpose of exploratory data analysis?

• To formulate hypotheses

• To calculate performance metrics

• To visualize the data

• To clean the data

Which technique is used in supervised learning?

• Clustering

• Regression

• Dimensionality Reduction

• Data Cleaning

What does KNN stand for in machine learning?

• K-Nearest Neighbors

• K-Nonlinear Networks

• K-Node Neighbors

• K-Number Nodes

Which library is primarily used for data manipulation in Python?

• NumPy

• Pandas

• Matplotlib

• SciPy

What is the main goal of a recommender system?

• To analyze data trends

• To predict future data

• To suggest products or content

• To clean data

Which of the following is a type of unsupervised learning?

• Linear Regression

• Decision Trees

• K-Means Clustering

• Logistic Regression

What is the first step in the Data Science process?

• Data Preparation

• Model Building

• Operationalize

• Discovery

Which statistical measure is used to describe the central tendency of a dataset?

• Range

• Mean

• Standard Deviation

• Variance