WGU D459 AAN1 TASK 2 FINAL TEST 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Initiative versus Guilt (Erikson).
Answer: Pre-school children initiating activities and asserting control.
◍ Which task is the data analyst responsible for within a data analysis
project?- Developing and implementing software applications- Conducting
statistical analyses and generating reports- Creating the project's overall
goals and objectives- Collecting, cleaning, and loading customer data into a
data warehouse.
Answer: Conducting statistical analyses and generating reports
◍ Autonomy versus Shame and Doubt (Erikson).
Answer: Erikson's second crisis of psychosocial development. Toddlers
either succeed or fail in gaining a sense of self-rule over their actions and
their bodies.
◍ Formal Operational Stage (Piaget).
Answer: adolescence to adulthood, abstract thoughts
◍ Cognitive Development.
Answer: the development of thinking, problem solving, and memory
◍ A data analyst works at an e-commerce company that wants to understand
its customer churn rate. Their manager has tasked them with conducting a
data analytics project to identify customers at risk of churn and offer these
customers targeted promotions to retain their business. What is the primary
purpose of the data analytics project's results in this scenario?To optimize
inventory managementTo identify customer preferencesTo compare the
company's churn rate to industry benchmarksTo predict customer churn risk.
, Answer: To predict customer churn risk
◍ A data analyst is planning a new analytics project for a retail company and
needs to collect data from different sources to complete the project.Which
question should be asked regarding the sources and quality of the available
data for the project?- Will the data support the hypothesis?- What is the time
frame of the data, and how often is it updated?- Is the data being obtained
from a third party, a public company, or a private company?- Is the data in a
.csv format or a .xls format?.
Answer: What is the time frame of the data, and how often is it updated?
◍ Skinner's Theory.
Answer: Theory proposed that we learn language through association,
imitation and reinforcement
◍ Constructivist Theory.
Answer: Piaget's theory, in which cognitive development results from
children's active construction of reality, based on their experiences with the
world
◍ Physical Development.
Answer: a developmental process that refers to the physical growth of a
person's body
◍ Preconventional.
Answer: Kohlberg's stage of moral development in which rewards and
punishments dominate moral thinking
◍ data imputation.
Answer: the process of replacing a null or missing value with a substituted
value
◍ In which phase of the data mining process does the data science team
investigate the problem, develop context and understanding, learn about
available data sources, and formulate initial hypotheses?Model
executionData preparationModel planningDiscovery.
Answer: Discovery
,◍ What is the role and function of a decision scientist within an organization?-
To oversee the company's human resources and ensure employee
satisfaction- To analyze data and provide insights to support informed
decision-making- To develop marketing strategies and increase sales
revenue- To manage the company's finances and ensure profitability.
Answer: To analyze data and provide insights to support informed
decision-making
◍ Are association rules descriptive or predictive?.
Answer: descriptive
◍ Discuss how the ROC curve can be used to determine an appropriate
threshold value for a classifier..
Answer: The ROC curve gives a quick visual understanding of the
classifier's accuracy. The closer to a right angle the curve, the more accurate
the model.
◍ Behaviorist Theory.
Answer: Personality is constructed by a series of learning experiences that
occur through interactions between the individual and their environment.
◍ What role do stakeholders play in the project cycle?- Create the project plan
and schedule- Define the project scope and objectives- Execute the project
tasks- Provide guidance and feedback throughout the project.
Answer: Provide guidance and feedback throughout the project
◍ What is a primary responsibility of a data engineer?- Designing and
implementing data storage solutions- Designing and developing data
visualizations for stakeholders- Analyzing and interpreting data to inform
business decisions- Developing predictive models using machine learning
algorithms.
Answer: Designing and implementing data storage solutions
◍ Which activity should the data analytics team focus on during the
communicate results phase- Presenting key findings to stakeholders and
evaluating the project's success- Building and testing different predictive
, models for customer churn- Analyzing the financial impact of the project on
the company's revenue and customer retention- Performing data cleaning
and transforming raw data into usable formats.
Answer: Presenting key findings to stakeholders and evaluating the project's
success
◍ Language Development.
Answer: the process by which children come to understand and
communicate language during early childhood
◍ Humanistic Theory.
Answer: An explanation of behavior that emphasizes the entirety of life
rather than individual components of behavior and focuses on human
dignity, individual choice, and self-worth
◍ p-value.
Answer: the probability under the assumption of no effect or no difference
(null hypothesis), of obtaining a result equal to or more extreme than what
was actually observed.
◍ What should business users and project sponsors do with their findings
during the operationalize phase of a data analytics project?- Develop and
refine data models- Assess benefits, implications, and business impact-
Produce detailed reports and visuals- Evaluate project completion and goals.
Answer: Assess benefits, implications, and business impact
◍ A data analyst plans to explore possible indicators of fraud in bank
transactions. The analyst is considering different tools that can be used to
collect the data needed.Which question should the analyst consider when
identifying the tool to use?- Are all relevant variables present?- What is the
format and structure of the data?- What is the research question for the
project?- What is the timeline for the project?.
Answer: What is the format and structure of the data?
◍ Sensorimotor Stage (Piaget).
Answer: from birth to 2 years, motor activity
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Initiative versus Guilt (Erikson).
Answer: Pre-school children initiating activities and asserting control.
◍ Which task is the data analyst responsible for within a data analysis
project?- Developing and implementing software applications- Conducting
statistical analyses and generating reports- Creating the project's overall
goals and objectives- Collecting, cleaning, and loading customer data into a
data warehouse.
Answer: Conducting statistical analyses and generating reports
◍ Autonomy versus Shame and Doubt (Erikson).
Answer: Erikson's second crisis of psychosocial development. Toddlers
either succeed or fail in gaining a sense of self-rule over their actions and
their bodies.
◍ Formal Operational Stage (Piaget).
Answer: adolescence to adulthood, abstract thoughts
◍ Cognitive Development.
Answer: the development of thinking, problem solving, and memory
◍ A data analyst works at an e-commerce company that wants to understand
its customer churn rate. Their manager has tasked them with conducting a
data analytics project to identify customers at risk of churn and offer these
customers targeted promotions to retain their business. What is the primary
purpose of the data analytics project's results in this scenario?To optimize
inventory managementTo identify customer preferencesTo compare the
company's churn rate to industry benchmarksTo predict customer churn risk.
, Answer: To predict customer churn risk
◍ A data analyst is planning a new analytics project for a retail company and
needs to collect data from different sources to complete the project.Which
question should be asked regarding the sources and quality of the available
data for the project?- Will the data support the hypothesis?- What is the time
frame of the data, and how often is it updated?- Is the data being obtained
from a third party, a public company, or a private company?- Is the data in a
.csv format or a .xls format?.
Answer: What is the time frame of the data, and how often is it updated?
◍ Skinner's Theory.
Answer: Theory proposed that we learn language through association,
imitation and reinforcement
◍ Constructivist Theory.
Answer: Piaget's theory, in which cognitive development results from
children's active construction of reality, based on their experiences with the
world
◍ Physical Development.
Answer: a developmental process that refers to the physical growth of a
person's body
◍ Preconventional.
Answer: Kohlberg's stage of moral development in which rewards and
punishments dominate moral thinking
◍ data imputation.
Answer: the process of replacing a null or missing value with a substituted
value
◍ In which phase of the data mining process does the data science team
investigate the problem, develop context and understanding, learn about
available data sources, and formulate initial hypotheses?Model
executionData preparationModel planningDiscovery.
Answer: Discovery
,◍ What is the role and function of a decision scientist within an organization?-
To oversee the company's human resources and ensure employee
satisfaction- To analyze data and provide insights to support informed
decision-making- To develop marketing strategies and increase sales
revenue- To manage the company's finances and ensure profitability.
Answer: To analyze data and provide insights to support informed
decision-making
◍ Are association rules descriptive or predictive?.
Answer: descriptive
◍ Discuss how the ROC curve can be used to determine an appropriate
threshold value for a classifier..
Answer: The ROC curve gives a quick visual understanding of the
classifier's accuracy. The closer to a right angle the curve, the more accurate
the model.
◍ Behaviorist Theory.
Answer: Personality is constructed by a series of learning experiences that
occur through interactions between the individual and their environment.
◍ What role do stakeholders play in the project cycle?- Create the project plan
and schedule- Define the project scope and objectives- Execute the project
tasks- Provide guidance and feedback throughout the project.
Answer: Provide guidance and feedback throughout the project
◍ What is a primary responsibility of a data engineer?- Designing and
implementing data storage solutions- Designing and developing data
visualizations for stakeholders- Analyzing and interpreting data to inform
business decisions- Developing predictive models using machine learning
algorithms.
Answer: Designing and implementing data storage solutions
◍ Which activity should the data analytics team focus on during the
communicate results phase- Presenting key findings to stakeholders and
evaluating the project's success- Building and testing different predictive
, models for customer churn- Analyzing the financial impact of the project on
the company's revenue and customer retention- Performing data cleaning
and transforming raw data into usable formats.
Answer: Presenting key findings to stakeholders and evaluating the project's
success
◍ Language Development.
Answer: the process by which children come to understand and
communicate language during early childhood
◍ Humanistic Theory.
Answer: An explanation of behavior that emphasizes the entirety of life
rather than individual components of behavior and focuses on human
dignity, individual choice, and self-worth
◍ p-value.
Answer: the probability under the assumption of no effect or no difference
(null hypothesis), of obtaining a result equal to or more extreme than what
was actually observed.
◍ What should business users and project sponsors do with their findings
during the operationalize phase of a data analytics project?- Develop and
refine data models- Assess benefits, implications, and business impact-
Produce detailed reports and visuals- Evaluate project completion and goals.
Answer: Assess benefits, implications, and business impact
◍ A data analyst plans to explore possible indicators of fraud in bank
transactions. The analyst is considering different tools that can be used to
collect the data needed.Which question should the analyst consider when
identifying the tool to use?- Are all relevant variables present?- What is the
format and structure of the data?- What is the research question for the
project?- What is the timeline for the project?.
Answer: What is the format and structure of the data?
◍ Sensorimotor Stage (Piaget).
Answer: from birth to 2 years, motor activity
