Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
Orders data at equal distance apart is level of measurement. - CORRECT ANSWER
Interval
Identify, Group, or Categorize is level of measurement. - CORRECT ANSWER
Nominal
The colors of cars is which level of measurement? - CORRECT ANSWER Nominal
The price of the car is which level of measurement? - CORRECT ANSWER Ratio
The number of appointments per day averaged 7 over the last 6 months. Which form of
analytics is this? - CORRECT ANSWER Descriptive: We are only describing the past. No
future predictions are made.
Is Big Data structured, unstructured or both? - CORRECT ANSWER Both
Where do we store big data - CORRECT ANSWER In a big data warehouse
Why do marketing teams use big data? - CORRECT ANSWER "Datamining" assists in
targeting the best customers for new products or reaching existing customers for like
products
Name the 4 levels of measurement - CORRECT ANSWER (NOIR) Nominal, Ordinal, Interval
Ratio
Continuous data with unique zero point is level of measurement. - CORRECT
ANSWER Ratio
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
Which level of measurement can be multiplied and divided? - CORRECT ANSWER Ratio
Which level of measurement cannot be analyzed which most statistical test? - CORRECT
ANSWER Nominal
Correlation is not - CORRECT ANSWER Causation
A good sample of the population being studied will be the right size and -
CORRECT ANSWER Random
If a sample is not random it creates - CORRECT ANSWER Measurement Bias
If a sample is not the right size it creates - CORRECT ANSWER Measurement
Bias
Measuring the housing market in North Carolina when making an inference about the
entire East coast is an example of - CORRECT ANSWER Non-representative Sample
Lemonade sales increase when it is warmer than 75 degrees. Weather and lemonade are
- CORRECT ANSWER Correlated. "NOT CAUSE"
Pulling names from a hat is a tool to create a sample - CORRECT ANSWER Random
Asking participants to taste test a yellow candy and a blue candy and select one can create
bias. How can we prevent bias? - CORRECT ANSWER Blinding
You are taking a survey and the question is leading. It seams advantageous to answer a
specific way. What type of bias is this? - CORRECT ANSWER Conscious KEYWORD: Benefit
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
A question is not leading, but you feel your boss might want you to answer a specific way -
CORRECT ANSWER Response You feel there is an "expected" response and may not answer
honestly (no leading )
pread of the data - CORRECT ANSWER Standard Deviation A normally distributed sample
spreads from -3 to +3 standard deviations from the mean
We should not use this measure of central tendency alone for decisions because it includes
outliers - CORRECT ANSWER Mean
The best measure of central tendency when making decisions - CORRECT ANSWER Median
We use this measure of central tendency if we want to know what happens the most -
CORRECT ANSWER Mode (most can also be defined as typical or common)
If the mean is 50 and the standard deviation is 5, what is the probability of being between
45 and 55? - CORRECT ANSWER 68.2% (of the sample will be within 1 standard deviation
of the mean) 50 - 5 = 45 and 50 + 5 + =55
What are the three probabilities of the bell curve? - CORRECT ANSWER 68.2% 95.4% 99.7%
68.2% of a sample will be within standard deviation of the mean. -
CORRECT ANSWER 1
95.4% of a sample will be within standard deviations of the mean. -
CORRECT ANSWER 2
99.7% of a sample will be within standard deviations of the mean. -
CORRECT ANSWER 3
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
The mean is 20 and the standard deviation is 2, what is the probability of being between 14
and 26 - CORRECT ANSWER 99.7% (of the sample will be within 3 standard deviations of
the mean) 20 + 2 + 2 + 2 = 26 and 20 - 2 - 2 - 2 = 14
can be used to differentiate between two samples with the same mean. -
CORRECT ANSWER Variation
Which measurement can tell us where a single data point is on the bell curve? - CORRECT
ANSWER z-score. (Tip: Remember z for me. Where are you in the curve of your peers)
You want to know how your height compares to all of your family tree. How do you
calculate a z score? - CORRECT ANSWER (Your height - the mean of the family tree height)
divided by the standard deviation of the family tree height (me-mean)/standard deviaiton
You are 63" tall and the family tree averages 67" with a standard deviation of 2". What is
your z- score? - CORRECT ANSWER (63-67)/2 = -2 You are 2 standard deviations shorter
than the family tree.
Which measure lets you measure your height compared to your maternal family tree and
your height compared to your paternal family tree? - CORRECT ANSWER z-scores let us
measure two samples by putting them to the same scale.
There are four shopping carts available and one has a broken wheel. What is your
probability of selecting the cart with the broken wheel? - CORRECT ANSWER 25% (1/4 =
0.25)
There is a 20% of parking close to the door and a 30% chance of getting the shopping cart
with a squeaky wheel. How do we calculated the probability of both events occurring? -
CORRECT ANSWER Multiply Key Words: AND, ALL, BOTH
There is a 20% of parking close to the door and a 30% chance of getting the shopping cart
with a squeaky wheel. How do we calculated the probability of either event occurring? -
CORRECT ANSWER Addition Key Words: OR, EITHER
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
Orders data at equal distance apart is level of measurement. - CORRECT ANSWER
Interval
Identify, Group, or Categorize is level of measurement. - CORRECT ANSWER
Nominal
The colors of cars is which level of measurement? - CORRECT ANSWER Nominal
The price of the car is which level of measurement? - CORRECT ANSWER Ratio
The number of appointments per day averaged 7 over the last 6 months. Which form of
analytics is this? - CORRECT ANSWER Descriptive: We are only describing the past. No
future predictions are made.
Is Big Data structured, unstructured or both? - CORRECT ANSWER Both
Where do we store big data - CORRECT ANSWER In a big data warehouse
Why do marketing teams use big data? - CORRECT ANSWER "Datamining" assists in
targeting the best customers for new products or reaching existing customers for like
products
Name the 4 levels of measurement - CORRECT ANSWER (NOIR) Nominal, Ordinal, Interval
Ratio
Continuous data with unique zero point is level of measurement. - CORRECT
ANSWER Ratio
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
Which level of measurement can be multiplied and divided? - CORRECT ANSWER Ratio
Which level of measurement cannot be analyzed which most statistical test? - CORRECT
ANSWER Nominal
Correlation is not - CORRECT ANSWER Causation
A good sample of the population being studied will be the right size and -
CORRECT ANSWER Random
If a sample is not random it creates - CORRECT ANSWER Measurement Bias
If a sample is not the right size it creates - CORRECT ANSWER Measurement
Bias
Measuring the housing market in North Carolina when making an inference about the
entire East coast is an example of - CORRECT ANSWER Non-representative Sample
Lemonade sales increase when it is warmer than 75 degrees. Weather and lemonade are
- CORRECT ANSWER Correlated. "NOT CAUSE"
Pulling names from a hat is a tool to create a sample - CORRECT ANSWER Random
Asking participants to taste test a yellow candy and a blue candy and select one can create
bias. How can we prevent bias? - CORRECT ANSWER Blinding
You are taking a survey and the question is leading. It seams advantageous to answer a
specific way. What type of bias is this? - CORRECT ANSWER Conscious KEYWORD: Benefit
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
A question is not leading, but you feel your boss might want you to answer a specific way -
CORRECT ANSWER Response You feel there is an "expected" response and may not answer
honestly (no leading )
pread of the data - CORRECT ANSWER Standard Deviation A normally distributed sample
spreads from -3 to +3 standard deviations from the mean
We should not use this measure of central tendency alone for decisions because it includes
outliers - CORRECT ANSWER Mean
The best measure of central tendency when making decisions - CORRECT ANSWER Median
We use this measure of central tendency if we want to know what happens the most -
CORRECT ANSWER Mode (most can also be defined as typical or common)
If the mean is 50 and the standard deviation is 5, what is the probability of being between
45 and 55? - CORRECT ANSWER 68.2% (of the sample will be within 1 standard deviation
of the mean) 50 - 5 = 45 and 50 + 5 + =55
What are the three probabilities of the bell curve? - CORRECT ANSWER 68.2% 95.4% 99.7%
68.2% of a sample will be within standard deviation of the mean. -
CORRECT ANSWER 1
95.4% of a sample will be within standard deviations of the mean. -
CORRECT ANSWER 2
99.7% of a sample will be within standard deviations of the mean. -
CORRECT ANSWER 3
, Wgu C207 Data Driven Decision Making Exam
Questions And Correct Answers With Frequently
Tested Questions And Rationale Already Graded A For
Guaranteed Pass Latest Update 2025.
The mean is 20 and the standard deviation is 2, what is the probability of being between 14
and 26 - CORRECT ANSWER 99.7% (of the sample will be within 3 standard deviations of
the mean) 20 + 2 + 2 + 2 = 26 and 20 - 2 - 2 - 2 = 14
can be used to differentiate between two samples with the same mean. -
CORRECT ANSWER Variation
Which measurement can tell us where a single data point is on the bell curve? - CORRECT
ANSWER z-score. (Tip: Remember z for me. Where are you in the curve of your peers)
You want to know how your height compares to all of your family tree. How do you
calculate a z score? - CORRECT ANSWER (Your height - the mean of the family tree height)
divided by the standard deviation of the family tree height (me-mean)/standard deviaiton
You are 63" tall and the family tree averages 67" with a standard deviation of 2". What is
your z- score? - CORRECT ANSWER (63-67)/2 = -2 You are 2 standard deviations shorter
than the family tree.
Which measure lets you measure your height compared to your maternal family tree and
your height compared to your paternal family tree? - CORRECT ANSWER z-scores let us
measure two samples by putting them to the same scale.
There are four shopping carts available and one has a broken wheel. What is your
probability of selecting the cart with the broken wheel? - CORRECT ANSWER 25% (1/4 =
0.25)
There is a 20% of parking close to the door and a 30% chance of getting the shopping cart
with a squeaky wheel. How do we calculated the probability of both events occurring? -
CORRECT ANSWER Multiply Key Words: AND, ALL, BOTH
There is a 20% of parking close to the door and a 30% chance of getting the shopping cart
with a squeaky wheel. How do we calculated the probability of either event occurring? -
CORRECT ANSWER Addition Key Words: OR, EITHER
