Data Analytics D204 WGU EXAM 2024
NEW VERSION UPDATE WITH
ACCURATE ANSWERS GUARANTEED
PASS.
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.
A. Data acquisition
B. Exploratory data analysis
C. Predictive modeling
D. Data reporting
- Ans - B.
An analyst has been tasked with defining data columns that could contain null
values.Which activity of the data acquisition phase is represented?
A. Collecting data
B. Disqualifying data sources
C. Detecting missing values
D. Transforming improperly formatted text - Ans - C.
Which activity in the data analytics life cycle occurs during the data acquisition phase
and requires the most time and effort from the data analyst?
A. Selecting the data sources
B. Importing data into a database
C. Cleaning data
D. Defining goals - Ans - C.
What might be developed by data analysts when acquiring data from a data
warehouse?
A. The procedures for extracting files from the data warehouse
B. The procedures for updating tables in the data warehouse
C. The relational structure of tables
D. The SQL queries of data within the tables - Ans - D. The SQL queries of data within
the tables
Two tools which help to promote effective communication during the testing phase of
software development.
A. Not enough variables will be considered in the analysis.
,B. The outcome of the analysis will be misaligned to business needs.
C. The analyst will lack insight into the structure of the data set.
D. The model will be built using the wrong data set. - Ans - C.
Which aspect of data exploration occurs when an analyst writes code to compile a bar
graph of dog food sales per month?
A. Performance of a correlation analysis
B. Analysis of data anomalies
C. Verification through visualization
D. Determination of variabilities - Ans - C.
An oil company uses robots and sensors to detect how pipeline corrosion changes over
time. The collected data is then used in a predictive model that estimates when a pipe
should be replaced.How does the predictive model serve this oil company?
A. To minimize interruptions from maintenance shutdowns
B. To minimize the need for workforce safety training
C. To improve compliance with pipeline construction standards
D. To improve compliance with pipeline disposal standards - Ans - A.
During which phase in the data analytics life cycle would a churn analysis be
performed? - Ans - Predictive analysis
Which mistake is commonly made during the predictive analytics phase?
A. The data are separated into different sets.
B. The variables are separated into response and independent variables.
C. The data are prepared before the model is developed.
D. The model is developed before the research question is known. - Ans - D.
Why might a data analyst resample a data set with replacement data in a data mining
project?
A. Skewed data resulting from outliers
B. Too little data for training and testing data sets
C. Wrong variables chosen for analyzation
D. Misidentification of causation due to correlation - Ans - B.
Which activity does an analyst perform in the discovery phase of the data analytics life
cycle?
A. Identifying business needs
B. Identifying outliers
C. Cleaning data
D. Collecting data - Ans - A
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 - Ans - B
A data analyst has identified combinations of sales transactions that frequently occur
together in data over the past 5 years.Which phase of the data analytics life cycle is
represented by this analysis?
A. Data acquisition
B. Representation and reporting
C. Data mining
D. Predictive modeling - Ans - C.
An analyst realizes that the data set has been reduced significantly, resulting in sample
sizes that are too small.In which phase of the data analytics life cycle did this likely
occur?
A. Data exploration
B. Data modeling
C. Data mining
D. Data discovery - Ans - C.
What strategy will contribute to effective data representation and reporting?
A. Creating a new training data set
B. Selecting data for a prediction model
C. Excluding unrelated data
D. Extracting data from source repositories - Ans - C.
What are two purposes of the reporting phase of the data analytics life cycle?
A. Provide the conclusions from the analysis in an engaging manner
B. Provide a tool for decision-makers to import and analyze more data
C. Provide actionable insights that can inform decision-making
D. Provide an automated way for decision-makers to test their own models - Ans - A &
C
During which phase of the data analytics life cycle does an analyst create a story to
report data? - Ans - Data reporting
What is a common duty of a database administrator?
A. Set project timelines, milestones, and goals
B. Acquire funding for data analytics projects
NEW VERSION UPDATE WITH
ACCURATE ANSWERS GUARANTEED
PASS.
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.
A. Data acquisition
B. Exploratory data analysis
C. Predictive modeling
D. Data reporting
- Ans - B.
An analyst has been tasked with defining data columns that could contain null
values.Which activity of the data acquisition phase is represented?
A. Collecting data
B. Disqualifying data sources
C. Detecting missing values
D. Transforming improperly formatted text - Ans - C.
Which activity in the data analytics life cycle occurs during the data acquisition phase
and requires the most time and effort from the data analyst?
A. Selecting the data sources
B. Importing data into a database
C. Cleaning data
D. Defining goals - Ans - C.
What might be developed by data analysts when acquiring data from a data
warehouse?
A. The procedures for extracting files from the data warehouse
B. The procedures for updating tables in the data warehouse
C. The relational structure of tables
D. The SQL queries of data within the tables - Ans - D. The SQL queries of data within
the tables
Two tools which help to promote effective communication during the testing phase of
software development.
A. Not enough variables will be considered in the analysis.
,B. The outcome of the analysis will be misaligned to business needs.
C. The analyst will lack insight into the structure of the data set.
D. The model will be built using the wrong data set. - Ans - C.
Which aspect of data exploration occurs when an analyst writes code to compile a bar
graph of dog food sales per month?
A. Performance of a correlation analysis
B. Analysis of data anomalies
C. Verification through visualization
D. Determination of variabilities - Ans - C.
An oil company uses robots and sensors to detect how pipeline corrosion changes over
time. The collected data is then used in a predictive model that estimates when a pipe
should be replaced.How does the predictive model serve this oil company?
A. To minimize interruptions from maintenance shutdowns
B. To minimize the need for workforce safety training
C. To improve compliance with pipeline construction standards
D. To improve compliance with pipeline disposal standards - Ans - A.
During which phase in the data analytics life cycle would a churn analysis be
performed? - Ans - Predictive analysis
Which mistake is commonly made during the predictive analytics phase?
A. The data are separated into different sets.
B. The variables are separated into response and independent variables.
C. The data are prepared before the model is developed.
D. The model is developed before the research question is known. - Ans - D.
Why might a data analyst resample a data set with replacement data in a data mining
project?
A. Skewed data resulting from outliers
B. Too little data for training and testing data sets
C. Wrong variables chosen for analyzation
D. Misidentification of causation due to correlation - Ans - B.
Which activity does an analyst perform in the discovery phase of the data analytics life
cycle?
A. Identifying business needs
B. Identifying outliers
C. Cleaning data
D. Collecting data - Ans - A
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 - Ans - B
A data analyst has identified combinations of sales transactions that frequently occur
together in data over the past 5 years.Which phase of the data analytics life cycle is
represented by this analysis?
A. Data acquisition
B. Representation and reporting
C. Data mining
D. Predictive modeling - Ans - C.
An analyst realizes that the data set has been reduced significantly, resulting in sample
sizes that are too small.In which phase of the data analytics life cycle did this likely
occur?
A. Data exploration
B. Data modeling
C. Data mining
D. Data discovery - Ans - C.
What strategy will contribute to effective data representation and reporting?
A. Creating a new training data set
B. Selecting data for a prediction model
C. Excluding unrelated data
D. Extracting data from source repositories - Ans - C.
What are two purposes of the reporting phase of the data analytics life cycle?
A. Provide the conclusions from the analysis in an engaging manner
B. Provide a tool for decision-makers to import and analyze more data
C. Provide actionable insights that can inform decision-making
D. Provide an automated way for decision-makers to test their own models - Ans - A &
C
During which phase of the data analytics life cycle does an analyst create a story to
report data? - Ans - Data reporting
What is a common duty of a database administrator?
A. Set project timelines, milestones, and goals
B. Acquire funding for data analytics projects
