WGU D426 OBJECTIVE ASSESSMENT PRE-
ASSESSMENT AND EXAMS 2026 DATA STUDY
BUNDLE FULL QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉ What are two reasons for increasing the use of analytics in
organizational decision making? Answer: 1. Relatively lower cost of
computer storage
2. Higher computer processing power
◉ How does probability theory inform decision making for managers?
Answer: By quantifying risk
◉ Which type of data are the Olympic medals of gold, silver, and bronze
example of? Answer: Ordinal (categorial)
◉ What are two aspects of data quality management? Answer: 1. It
reduces the amount of incomplete data
2. It cleans data
◉ Which two attributes indicate potential data quality issues when
evaluating a set of nominal data? Answer: 1. Missing Data
2. Misspelled data
,◉ When conducting a study that measures an individual's weight, all
scales are calibrated prior to use in measurement.
Which type of error should this procedure significantly reduce? Answer:
Systematic error
◉ An advertising manager creates a research study by presenting low,
medium or high frequency of the same ad in matched markets. The
manager then reports on sales in each market location.
What is the term for the different sales in this study? Answer: Response
variable
◉ Healthcare study follows a particular sample over time to identify
how the health habits of teenagers impact their likelihood of acquiring
various diseases later in their life. The healthcare org hopes the data will
allow them to create early prevention programs.
Which type of research design does this study describe? Answer: Cohort
study
◉ Several missing values in a particular field in a dataset were observed.
The likelihood of a record having a missing value is correlated to
another variable in the dataset.
Which two types of error might be introduced into the dataset if the
removed record included missing values? Answer: Systematic error
, Omission error
◉ A company is trying to increase online sales revenue by improving its
email advertising campaign for repeat customers as well as new
customers.
Which two variables would be used in determining a campaign to
maximize revenue gain? Answer: Number of purchases per email
Spending per purchase
◉ A company that raises turkeys hopes to increase the rate of growth
while controlling the cost of feeding them. It has determined that feeds
containing both nutrients and proteins can be used.
Which decision-making technique is most appropriate to minimize the
cost of feeding the birds? Answer: Linear programming
◉ Comparing outcomes of different drug testing results Answer:
ANOVA
◉ Understand effective marketing to spend advertising dollars
efficiently Answer: Correlation
◉ Monitor production process Answer: Control charts
ASSESSMENT AND EXAMS 2026 DATA STUDY
BUNDLE FULL QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉ What are two reasons for increasing the use of analytics in
organizational decision making? Answer: 1. Relatively lower cost of
computer storage
2. Higher computer processing power
◉ How does probability theory inform decision making for managers?
Answer: By quantifying risk
◉ Which type of data are the Olympic medals of gold, silver, and bronze
example of? Answer: Ordinal (categorial)
◉ What are two aspects of data quality management? Answer: 1. It
reduces the amount of incomplete data
2. It cleans data
◉ Which two attributes indicate potential data quality issues when
evaluating a set of nominal data? Answer: 1. Missing Data
2. Misspelled data
,◉ When conducting a study that measures an individual's weight, all
scales are calibrated prior to use in measurement.
Which type of error should this procedure significantly reduce? Answer:
Systematic error
◉ An advertising manager creates a research study by presenting low,
medium or high frequency of the same ad in matched markets. The
manager then reports on sales in each market location.
What is the term for the different sales in this study? Answer: Response
variable
◉ Healthcare study follows a particular sample over time to identify
how the health habits of teenagers impact their likelihood of acquiring
various diseases later in their life. The healthcare org hopes the data will
allow them to create early prevention programs.
Which type of research design does this study describe? Answer: Cohort
study
◉ Several missing values in a particular field in a dataset were observed.
The likelihood of a record having a missing value is correlated to
another variable in the dataset.
Which two types of error might be introduced into the dataset if the
removed record included missing values? Answer: Systematic error
, Omission error
◉ A company is trying to increase online sales revenue by improving its
email advertising campaign for repeat customers as well as new
customers.
Which two variables would be used in determining a campaign to
maximize revenue gain? Answer: Number of purchases per email
Spending per purchase
◉ A company that raises turkeys hopes to increase the rate of growth
while controlling the cost of feeding them. It has determined that feeds
containing both nutrients and proteins can be used.
Which decision-making technique is most appropriate to minimize the
cost of feeding the birds? Answer: Linear programming
◉ Comparing outcomes of different drug testing results Answer:
ANOVA
◉ Understand effective marketing to spend advertising dollars
efficiently Answer: Correlation
◉ Monitor production process Answer: Control charts
