Exploring Big Data Analytics Basics

Which of the following is a common data mining technique used to group similar data points together?

• Regression

• Clustering

• Classification

• Association

Which visualisation method is best suited for showing the distribution of a single continuous variable?

• Pie chart

• Histogram

• Line graph

• Scatter plot

Which of the following is an open-source big data processing tool developed by Apache?

• Microsoft Excel

• Apache Hadoop

• Tableau

• Google Sheets

Which machine learning approach involves learning from labelled data?

• Unsupervised learning

• Reinforcement learning

• Supervised learning

• Deep learning

What is the main purpose of data anonymisation in analytics?

• To increase data storage

• To protect individual privacy

• To improve data accuracy

• To speed up processing

Which of the following is a benefit of using cloud computing for big data analytics?

• Limited scalability

• High upfront hardware costs

• On-demand resource allocation

• Manual data backup

Which data mining technique is used to predict a continuous value, such as temperature in degrees Celsius?

• Classification

• Regression

• Clustering

• Association rule mining

Which of the following is NOT a common data visualisation method?

• Bar chart

• Heat map

• Decision tree

• Box plot

Which big data tool is specifically designed for real-time data streaming and processing?

• Apache Spark

• Apache Hive

• Apache Pig

• Apache Sqoop

Which of the following best describes the term "overfitting" in machine learning?

• The model is too simple and underperforms

• The model performs well on new data

• The model fits the training data too closely and fails on new data

• The model ignores the training data