Introduction to Data Analytics Chapter 1 Quiz

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Questions and Answers

What are the key components of data analytics?

Volume, variety, and velocity (correct)

Veracity and value

Structured, semi-structured, and unstructured data

Big data, tidy data, and database

What is the difference between a database and a data warehouse?

Database stores current data, while data warehouse stores historical data (correct)

Database is for transaction data, while data warehouse is for textual data files

Database is for small-scale data storage, while data warehouse is for big data storage

Database is for structured data, while data warehouse is for unstructured data

What are the 3V's that characterize big data?

Variety, velocity, and volume (correct)

Volume, velocity, and veracity

Variety, veracity, and value

Volume, variety, and value

What is the speed component of big data known as?

Velocity Signup and view all the answers

Which of the following is an example of unstructured data?

Emails Signup and view all the answers

What is driving the big data revolution according to the text?

All of the above Signup and view all the answers

What is the key component of Data Analytics that involves gathering, analyzing, and reporting information to various users about the performance of the company and its environment?

Business Intelligence (BI) Signup and view all the answers

Which component of Data Analytics involves using data to build models that aid in better decision making and ultimately provide value to the decision maker?

Decision making Signup and view all the answers

What type of data variable can be any of the infinite number of values over a given interval?

Continuous variable Signup and view all the answers

Which technology is specifically mentioned for statisticians in the context of data analytics?

SAS and Excel Signup and view all the answers

What is a pattern in the context of data analytics?

A design or model that appears to tell some story Signup and view all the answers

What is the process of analyzing data (small or large) using mathematics, statistics, and computer science known as?

Data Analytics Signup and view all the answers

Which type of data variable can only take distinct, separate values with no intermediate values possible within the range?

Discrete variable Signup and view all the answers

What is a continuous variable in data analytics?

Any of the infinite number of values over a given interval. Signup and view all the answers

What is a key part of the Data Analytics process that involves generating insights and looking at patterns in data?

Pattern Recognition. Signup and view all the answers

Study Notes

Key Components of Data Analytics

Data analytics encompasses gathering, analyzing, and reporting performance information to users.
Utilizing data to develop models enhances decision-making and adds value to decision-makers.

Difference Between Database and Data Warehouse

A database is a structured collection of data that supports daily transactions.
A data warehouse is a centralized repository for data analysis and reporting, drawing from multiple databases.

The 3V's of Big Data

Volume: Refers to the vast amounts of data generated every second.
Velocity: Describes the speed at which data is created and processed.
Variety: Highlights the different formats and sources of data encountered.

Speed Component of Big Data

The speed component is commonly referred to as "Velocity."

Example of Unstructured Data

Unstructured data can include text documents, images, or social media posts that do not fit neatly into existing data structures.

Drivers of the Big Data Revolution

Advances in technology, increased digital data generation, and the need for data-driven insights are driving the big data revolution.

Data Analytics Reporting

Reporting involves presenting analytical information about a company’s performance and environment to stakeholders.

Modeling Component

Building models to predict outcomes and trends is essential for effective decision-making in data analytics.

Continuous Variables

Continuous data variables can take any number within a range, including fractions or decimals.

Technology for Statisticians

Statistical software and programming languages, such as R or Python, are highlighted as essential tools for data analysis.

Understanding Patterns

In data analytics, a pattern is recognized when consistent trends or relationships emerge within the data.

Data Analysis Process

The process of analyzing data using mathematics, statistics, and computer science is known as Data Science or Data Analysis.

Distinct Data Variables

A categorical variable only accepts discrete, separate values with no possible intermediate values in the range.

Continuous Variable Definition

In data analytics, a continuous variable is numerically measurable and can take any value within a given interval.

Insight Generation in Data Analytics

Insight generation is a critical part of data analytics, involving the identification of patterns and significant trends within datasets.

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Description

Test your understanding of big data, data analytics components, history, information flow, database vs. data warehouse, data mining, and data visualization in this introductory quiz.