WPC 300 Final Exam Data Analysis
With Correct Answers
In an agile approach of analytics what is the first step of the process? - Ans--
Perform business discovery
In an ETL process, data is loaded into a final target database such as: - Ans--
Data warehouse
What are the four types of data analytical method? - Ans--Descriptive,
explanatory, predictive and prescriptive
Which of the following is an example of secondary data? - Ans--Firm's
proprietary data
Which of the following data analysis models use optimization techniques? -
Ans--Prescriptive analytics
Predictive analytics may be applied to __________, which is a set of
techniques that use descriptive data and forecasts to identify the decisions
most likely to result in the best performance. - Ans--Prescriptive analytics
Target is examining their online sales data during the pandemic to
understand what happened. Which kind of analytical technique are they
using? - Ans--Descriptive analytics
Costco wants to know how to stock their warehouses for a future pandemic
and are using current sales data to help them project the needs. Which kind
of analytical technique are they using? - Ans--Predictive analytics
Your professor is considering purchasing a self-driving car that can figure
out the best route and the optimum safe way to drive there without human
intervention. What kind of analytics is the car using to do this? - Ans--
Prescriptive analytics
, Which of the following question(s) can be better answered using data in
order to reach an evidence-based conclusion? - Ans--All of the answer
selections are correct.
Deleting the grid lines in a chart - Ans--Increases the data-ink ratio
When the lie-factor of a graphical chart is more than 1, - Ans--the size of the
effect shown in the graph is bigger than the actual effect in the data.
Which are useful principles for data visualization? - Ans--The graph
suggests a possible true effect
Which of the following statement(s) about charts is false? - Ans--None of the
other answers are false
In order for a chart to have graphical integrity, the lie factor must be: - Ans--
close to 1
What best describes the nature of a rose diagram? - Ans--Plots data using a
circular historical plot
In for a chart to minimize graphical complexity, the data-ink ratio must be: -
Ans--close to 1
Which of the following violates the principle of data visualization? - Ans--The
data-ink ratio should be higher than 1
Which of the following statement(s) about charts is true? - Ans--Data ink can
sometimes help tell a richer story
Which of the following statements is a reason not to use a table for data
visualization? - Ans--Tables cannot easily show trends
Standard deviation of a normal data distribution is a _______. - Ans--
measure of data dispersion
The difference between the first and third quartiles is referred to as the
____________. - Ans--interquartile range
With Correct Answers
In an agile approach of analytics what is the first step of the process? - Ans--
Perform business discovery
In an ETL process, data is loaded into a final target database such as: - Ans--
Data warehouse
What are the four types of data analytical method? - Ans--Descriptive,
explanatory, predictive and prescriptive
Which of the following is an example of secondary data? - Ans--Firm's
proprietary data
Which of the following data analysis models use optimization techniques? -
Ans--Prescriptive analytics
Predictive analytics may be applied to __________, which is a set of
techniques that use descriptive data and forecasts to identify the decisions
most likely to result in the best performance. - Ans--Prescriptive analytics
Target is examining their online sales data during the pandemic to
understand what happened. Which kind of analytical technique are they
using? - Ans--Descriptive analytics
Costco wants to know how to stock their warehouses for a future pandemic
and are using current sales data to help them project the needs. Which kind
of analytical technique are they using? - Ans--Predictive analytics
Your professor is considering purchasing a self-driving car that can figure
out the best route and the optimum safe way to drive there without human
intervention. What kind of analytics is the car using to do this? - Ans--
Prescriptive analytics
, Which of the following question(s) can be better answered using data in
order to reach an evidence-based conclusion? - Ans--All of the answer
selections are correct.
Deleting the grid lines in a chart - Ans--Increases the data-ink ratio
When the lie-factor of a graphical chart is more than 1, - Ans--the size of the
effect shown in the graph is bigger than the actual effect in the data.
Which are useful principles for data visualization? - Ans--The graph
suggests a possible true effect
Which of the following statement(s) about charts is false? - Ans--None of the
other answers are false
In order for a chart to have graphical integrity, the lie factor must be: - Ans--
close to 1
What best describes the nature of a rose diagram? - Ans--Plots data using a
circular historical plot
In for a chart to minimize graphical complexity, the data-ink ratio must be: -
Ans--close to 1
Which of the following violates the principle of data visualization? - Ans--The
data-ink ratio should be higher than 1
Which of the following statement(s) about charts is true? - Ans--Data ink can
sometimes help tell a richer story
Which of the following statements is a reason not to use a table for data
visualization? - Ans--Tables cannot easily show trends
Standard deviation of a normal data distribution is a _______. - Ans--
measure of data dispersion
The difference between the first and third quartiles is referred to as the
____________. - Ans--interquartile range
