INSTANT PDF DOWNLOAD WGU C207 DATA-DRIVEN
DECISION-MAKING FINAL EXAM MOST
TESTED QUESTIONS AND VERIFIED ANSWERS, 100%
GUARANTEE PASS
Is Big Data structured, unstructured or both?
Both
Where do we store big data
In a big data warehouse
Why do marketing teams use big data?
"Datamining" assists in targeting the best customers for new products or reaching
existing customers for like products
Name the 4 levels of measurement
(NOIR) Nominal, Ordinal, Interval Ratio
Continuous data with unique zero point is _______ level of measurement.
Ratio
Orders data at equal distance apart is _______ level of measurement.
Interval
Identify, Group, or Categorize is _______ level of measurement.
Nominal
The colors of cars is which level of measurement?
Nominal
The price of the car is which level of measurement?
Ratio
,Which level of measurement can be multiplied and divided?
Ratio
Which level of measurement cannot be analyzed which most statistical test?
Nominal
Correlation is not _________
Causation
A good sample of the population being studied will be the right size and
___________
Random
If a sample is not random it creates ____________
Measurement Bias
If a sample is not the right size it creates ___________
Measurement Bias
Measuring the housing market in North Carolina when making an inference
about the entire East coast is an example of __________
Non-representative Sample
Lemonade sales increase when it is warmer than 75 degrees. Weather and
lemonade are __________
Correlated. "NOT CAUSE"
Pulling names from a hat is a tool to create a ______ sample
Random
Asking participants to taste test a yellow candy and a blue candy and select one
can create bias. How can we prevent bias?
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?
, Conscious KEYWORD: Benefit
A question is not leading, but you feel your boss might want you to answer a
specific way
Response You feel there is an "expected" response and may not answer honestly
(no leading )
pread of the data
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
Mean
The best measure of central tendency when making decisions
Median
We use this measure of central tendency if we want to know what happens the
most
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?
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?
68.2% 95.4% 99.7%
68.2% of a sample will be within _______ standard deviation of the mean.
1
95.4% of a sample will be within ______ standard deviations of the mean.
2
DECISION-MAKING FINAL EXAM MOST
TESTED QUESTIONS AND VERIFIED ANSWERS, 100%
GUARANTEE PASS
Is Big Data structured, unstructured or both?
Both
Where do we store big data
In a big data warehouse
Why do marketing teams use big data?
"Datamining" assists in targeting the best customers for new products or reaching
existing customers for like products
Name the 4 levels of measurement
(NOIR) Nominal, Ordinal, Interval Ratio
Continuous data with unique zero point is _______ level of measurement.
Ratio
Orders data at equal distance apart is _______ level of measurement.
Interval
Identify, Group, or Categorize is _______ level of measurement.
Nominal
The colors of cars is which level of measurement?
Nominal
The price of the car is which level of measurement?
Ratio
,Which level of measurement can be multiplied and divided?
Ratio
Which level of measurement cannot be analyzed which most statistical test?
Nominal
Correlation is not _________
Causation
A good sample of the population being studied will be the right size and
___________
Random
If a sample is not random it creates ____________
Measurement Bias
If a sample is not the right size it creates ___________
Measurement Bias
Measuring the housing market in North Carolina when making an inference
about the entire East coast is an example of __________
Non-representative Sample
Lemonade sales increase when it is warmer than 75 degrees. Weather and
lemonade are __________
Correlated. "NOT CAUSE"
Pulling names from a hat is a tool to create a ______ sample
Random
Asking participants to taste test a yellow candy and a blue candy and select one
can create bias. How can we prevent bias?
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?
, Conscious KEYWORD: Benefit
A question is not leading, but you feel your boss might want you to answer a
specific way
Response You feel there is an "expected" response and may not answer honestly
(no leading )
pread of the data
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
Mean
The best measure of central tendency when making decisions
Median
We use this measure of central tendency if we want to know what happens the
most
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?
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?
68.2% 95.4% 99.7%
68.2% of a sample will be within _______ standard deviation of the mean.
1
95.4% of a sample will be within ______ standard deviations of the mean.
2
