Question 1

Data analytics will produce results,but those results might be meaningless or misleading.

Accepted Answer

Data analytics can only produce accurate and meaningful results when the data being analyzed is relevant and of high quality. If the data being analyzed is incomplete or inaccurate, the results of the analysis can be misleading or even meaningless. Additionally, if the analysis is not done properly, such as by using the wrong data model, the results can be skewed and produce incorrect conclusions.

Question 2

Data mining is important because any customer can become a brand advocate or adversary by freely expressing opinions and attitudes that reach millions of other customers on social media.

Accepted Answer

The answer of Data mining is important because any customer...

Question 3

Databases are stored on servers that reside in the company's data centers,a private cloud,or a public cloud.

Accepted Answer

Databases can be stored on servers that reside in a company's data centers, a private cloud or a public cloud.

Question 4

Up to 25 percent of an organization's data are nonstructured word-processing documents,social media,text messages,audio,video,images and diagrams,fax and memos,call center or claims notes,and so on.

Accepted Answer

The answer of Up to 25 percent of an organization's...

Question 5

Data are worthless if you cannot analyze,interpret,understand,and apply the results in context.

Accepted Answer

Data are only valuable if they can be used to inform decisions or actions. To do so, the data must be analyzed, interpreted, understood, and applied in the appropriate context. Otherwise, the data will not provide any useful insights or guidance. Therefore, the statement is true.

Question 6

Distributed databases use a Select Query (SQ)architecture to process information requests.

Accepted Answer

Distributed databases typically use a distributed architecture, not specifically a "Select Query (SQ) architecture," to process information requests. This involves multiple interconnected databases that work together to manage data.

Question 7

Distributed databases use a client/server architecture to process information requests.

Accepted Answer

Distributed databases allow multiple computers to access and process information from a central database server, making use of a client/server architecture.

Question 8

Low-cost sensors make it possible to monitor and control the behavior of all types of physical things.

Accepted Answer

The answer of Low-cost sensors make it possible to monitor...

Question 9

Data ownership,data quality,and formally managed data are high on the agenda of database managers because they are held personally accountable if their company is found to be in violation of regulations.

Accepted Answer

The answer of Data ownership,data quality,and formally managed data are...

Question 10

Databases need one or more backups and should be archived either onsite or offsite in case of a crash or security incident.

Accepted Answer

The answer of Databases need one or more backups and...

Question 11

To improve quality,McDonald's bakery operation replaced manual equipment with high-speed photo analyses to inspect thousands of buns per minute for color,size,and sesame seed distribution.

Accepted Answer

The statement describes a true improvement made by McDonald's in their bakery operation.

Question 12

Social commentary and social media are mined for sentiment analysis or to understand consumer intent.

Accepted Answer

Sentiment analysis and understanding consumer intent are common applications of analyzing social commentary and social media data. These analyses can provide valuable insights for businesses and researchers.

Question 13

Big data can have a significant positive impact on the success of any enterprise,or be a low-contributing major expense.

Accepted Answer

Big data has the potential to provide insights and opportunities for businesses to make informed decisions and improve their operations, but it can also be a costly investment that does not necessarily translate into significant returns. The success of big data implementation depends on various factors such as the quality and relevance of the data, the tools and technologies used, and the ability to effectively analyze and use the insights gained.

Question 14

According to the 90/90 data-use principle,a majority of stored data,as high as 90 percent,is often accessed after 90 days.

Accepted Answer

The 90/90 data-use principle actually suggests that 90% of data is never accessed again after 90 days.

Question 15

The primary disadvantage of distributed database configurations is transmission delay when users are geo-dispersed.

Accepted Answer

The answer of The primary disadvantage of distributed database configurations...

Question 16

MapReduce breaks up the huge dataset into smaller subsets;then distributes the subsets among multiple servers where they are partially processed.

Accepted Answer

MapReduce does indeed break up large datasets into smaller subsets that are distributed among multiple servers for partial processing. This allows for more efficient processing of large amounts of data.

Question 17

A distributed database allows apps on computers and mobiles to access data from local and remote databases.

Accepted Answer

A distributed database is designed to store data in many computers connected to a network so that users and applications can access it from different locations, making it possible for apps on computers and mobiles to access data from local and remote databases.

Question 18

A limitation of Apache Hadoop is that it imposes conditions on the structure of the data it can process.

Accepted Answer

Apache Hadoop is designed to handle large volumes of data in a variety of shapes and forms. It does not impose conditions on the structure of the data, allowing it to process both structured and unstructured data.

Question 19

Profit margin is a measure of the percent of a company's revenue left over after paying for its variable costs,such as wages and raw materials.

Accepted Answer

Profit margin measures the percentage of revenue remaining after all expenses, both variable and fixed costs (like rent, salaries, and utilities), have been deducted, not just variable costs.

Question 20

Master data entities are the main entities of a company,such as customers,products,suppliers,employees,and assets.

Accepted Answer

Master data entities are indeed the main entities of a company and include customers, products, suppliers, employees, and assets.

Quiz 3: Data Management, Business Intelligence, and Data Analytics