Data mining exam 1 - Study guides, Class notes & Summaries

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers 2024/2025 (Graded A+) What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key val...

WGU D204 Practice Exam Questions and Answers Updated 2024/2025 Graded A+. Data Exploration In which phase of the data analytics life cycle does an analyst build a histogram? a. Data acquisition b. Data exploration c. Discovery d. Predictive modeling Exploratory data analysis An analyst applies a statistical formula to obtain the average temperature for a city over the last 50 years. Which phase of the data analytics life cycle is represented by this activity? a. Data acquisition b. Exp...

MIS 2201 Midterm II UMD Exam Questions with Correct Answers Why data analytics is a hot topic - Answer--More data has been collected in the past several years than the collection of data in the whole history of mankind before that -Companies realizing that they are sitting on mountains of valuable data -Technology has improved that is enabling easy collection and analysis of valuable data -Enhancement in data analytics techniques Categories of data analytics and their goals: descriptiv...

Test Bank Business Analytics Data Analysis and Decision Making 6th Edition By S. Christian Albright, Wayne L. Winston || Complete Exam With Questions & Answers All Chapters ( 1-20) | Updated 2024 A+ Bank Business Analytics Data Analysis and Decision Making 6th complete exam questions and answers Chapter 1-20 1. The decision-making themes covered in Business Analytics: Data Analysis & Decision Making include which of the following? a. optimization techniques b. decision analysis with uncerta...

DBW 301 Final Exam | Verified with 100% Correct Answers ..... table contains the values we want to analyze. A. Fact B. Dimension C. Aggregate D. Center ........ focus is on how managers view the business. A. Data warehouse B. OLTP C. Business system D. OLAP ......... reveals business trends. A. Data warehouse B. OLTP C. Business system D. OLAP ........... acts as the glue that connects all parts of the data warehouse. A. Metadata B. ETL C. Operational Metadata Extraction and Transformation Met...

Test Bank Business Analytics Data Analysis and Decision Making 6th Edition By S. Christian Albright, Wayne L. Winston || Complete Exam With Questions & Answers All Chapters ( 1-20) | Updated 2024 A+ Bank Business Analytics Data Analysis and Decision Making 6th complete exam questions and answers Chapter 1-20 1. The decision-making themes covered in Business Analytics: Data Analysis & Decision Making include which of the following? a. optimization techniques b. decision analysis with uncertainty ...

Test Bank Business Analytics Data Analysis and Decision Making 6th Edition By S. Christian Albright, Wayne L. Winston || Complete Exam With Questions & Answers All Chapters ( 1-20) | Updated 2024 A+ Bank Business Analytics Data Analysis and Decision Making 6th complete exam questions and answers Chapter 1-20 1. The decision-making themes covered in Business Analytics: Data Analysis & Decision Making include which of the following? a. optimization techniques b. decision analysis with uncertainty ...

BSIS 308 Exam 1 | Questions with 100% Correct Answers In some instances, advanced analytics refers to: a) descriptive and prescriptive analytics b) simulation c) predictive and prescriptive analytics d) decision analysis A company's human resources department is responsible for ensuring all of the following except that the: a) organization has the mix of skill sets necessary to meet its needs b) highest-quality talent is hired c) employees are having the proper amount of taxes removed from th...

CAIA Level I Exam 2023 5th percentile vs 25th percentile performance - CORRECT ANSWER-5th percentile managers outperform in every comparison BUT 25th percentile managers' performance is more volatile --> even if 25th percentile managers outperform they tend to mean revert --> demonstrates the perils of choosing managers based on historical performance alternative asset performance evaluation - CORRECT ANSWER-unlike in traditional assets, alpha is difficult to define in alterna...

Identifying business needs Which activity does an analyst perform in the discovery phase of the data analytics life cycle? a. Collecting Data b. Cleaning Data c. Identifying outliers d. Identifying business needs Data Exploration In which phase of the data analytics life cycle does an analyst build a histogram? a. Data acquisition b. Data exploration c. Discovery d. Predictive modeling Exploratory data analysis An analyst applies a statistical formula to obtain the average temperatu...