Question 1

There are basic chart types and specialized chart types.A Gantt chart is a specialized chart type.

Accepted Answer

A Gantt chart is a specialized chart type commonly used in project management to visualize the timeline and progress of a project, making it a specialized chart type.

Question 2

Interval data are variables that can be measured on interval scales.

Accepted Answer

Interval data can be measured on interval scales which have equal intervals between the numbers on the scale. Examples of interval data include temperatures in Celsius or Fahrenheit scales.

Question 3

In the Dallas Cowboys case study,the focus was on using data analytics to decide which players would play every week.

Accepted Answer

The Dallas Cowboys case study on using data analytics primarily focused on enhancing the fan experience and improving stadium operations, not directly on deciding which players would play every week.

Question 4

Descriptive statistics is all about describing the sample data on hand.

Accepted Answer

Descriptive statistics is a branch of statistics that deals with summarizing and describing the features of a dataset. Its main goal is to provide insights into the sample data on hand. Therefore, the statement is true.

Question 5

Visualization differs from traditional charts and graphs in complexity of data sets and use of multiple dimensions and measures.

Accepted Answer

Visualization allows for more complex data sets and the use of multiple dimensions and measures, whereas traditional charts and graphs may only show a limited amount of data in a simplified manner.

Question 6

Nominal data represent the labels of multiple classes used to divide a variable into specific groups.

Accepted Answer

The answer of Nominal data represent the labels of multiple...

Question 7

Visual analytics is aimed at answering,"What is it happening?" and is usually associated with business analytics.

Accepted Answer

Visual analytics is aimed at answering "Why is it happening?" and is used to understand complex data through visualization, often associated with exploratory data analysis rather than just business analytics.

Question 8

Data source reliability means that data are correct and are a good match for the analytics problem.

Accepted Answer

The answer of Data source reliability means that data are...

Question 9

Data accessibility means that the data are easily and readily obtainable.

Accepted Answer

Data accessibility refers to the ease with which data can be located, retrieved, and used. If the data are easily and readily obtainable, they are considered accessible.

Question 10

When telling a story during a presentation,it is best to avoid describing hurdles that your character must overcome,to avoid souring the mood.

Accepted Answer

Describing hurdles that a character must overcome can add tension and excitement to a story, making it more engaging for the audience.

Question 11

Data is the main ingredient for any BI,data science,and business analytics initiative.

Accepted Answer

Data is the foundation of any data-driven initiative, including business intelligence, data science, and business analytics. Without data, these initiatives cannot effectively function or provide valuable insights.

Question 12

The data storage component of a business reporting system builds the various reports and hosts them for,or disseminates them to users.It also provides notification,annotation,collaboration,and other services.

Accepted Answer

The data storage component of a business reporting system is primarily responsible for storing data, not for building reports or providing services such as notification, annotation, collaboration, etc. These functions are typically handled by other components of the reporting system, such as the reporting engine or collaboration tools.

Question 13

One of SiriusXM's challenges was tracking potential customers when cars were sold.

Accepted Answer

SiriusXM faced difficulty in identifying potential customers when cars with older technology were sold. They had to rely on sold vehicle data to reach out to potential customers, which was often inaccurate or outdated.

Question 14

Google Maps has set new standards for data visualization with its intuitive Web mapping software.

Accepted Answer

Google Maps has indeed set new standards for data visualization with its intuitive Web mapping software.

Question 15

Dashboards provide visual displays of important information that is consolidated and arranged across several screens to maintain data order.

Accepted Answer

Dashboards typically consolidate and arrange important information on a single screen to provide a quick overview and maintain data order.

Question 16

Predictive algorithms generally require a flat file with a target variable,so making data analytics ready for prediction means that data sets must be transformed into a flat-file format and made ready for ingestion into those predictive algorithms.

Accepted Answer

Predictive algorithms typically require a flat-file format and a target variable, so data sets must often be transformed into this format to be ready for ingestion into those algorithms.

Question 17

To respond to its market challenges,SiriusXM decided to focus on manufacturing efficiency.

Accepted Answer

There is no information provided in the given statement about SiriusXM's decision to focus on manufacturing efficiency.

Question 18

In the FEMA case study,the BureauNet software was the primary reason behind the increased speed and relevance of the reports FEMA employees received.

Accepted Answer

The FEMA case study states that the BureauNet software "enabled the rapid consolidation of data from various sources and provided a real-time view of the disaster situations and the status of the response efforts." This resulted in employees receiving more relevant and timely reports, indicating that the BureauNet software was a primary reason behind the increased speed and relevance.

Question 19

Data is the contextualization of information,that is,information set in context.

Accepted Answer

Information is the contextualization of data, meaning data becomes information when it is given context and meaning.

Question 20

Structured data is what data mining algorithms use and can be classified as categorical or numeric.

Accepted Answer

Structured data is indeed what data mining algorithms use and can be classified as categorical (discrete, non-numerical variables) or numeric (continuous, numerical variables).

Quiz 2: Descriptive Analytics I: Nature of Data,statistical Modeling,