OA (Latest Update ) Questions
with Correct Answers {Grade A} 100%
Verified
A study used when you cannot control conditions - correct answer observational
Observes people going forward in time from the time of their entry into the study. -
correct answer cohort study
What are the three elements of an experimental study? - correct answer unit,
treatment, response
Accurately measures what is it intended to measure - correct answer valid data
________________________ an experimental study prevents bias. - correct answer
Blinding
,Neither the treatment allocator nor the participants know who is in the treatment
group or control group - correct answer double blind study
Participants are not told if they are in the treatment group or control group - correct
answer blind study
Describes characteristics of a dataset. Mean, median, mode, variation, standard
deviation, range.... - correct answer descriptive analytics
Uses data from the past to predict the future - correct answer predictive
Uses experimental design and optimization to predict a future - correct answer
prescriptive
If we move to six appointments an hour we can increase revenue 2%. Which form of
analytics is this? - correct answer prescriptive
,Based on the last four quarters, we can predict $4,1 million in sales next quarter.
Which form of analytics is this? - correct answer predictive
The number of appointments per day averaged 7 over the last 6 months. Which form of
analytics is this? - correct answer descriptive
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
Continuous date with a unique zero point is _______________ level of measurement. -
correct answer ratio
Orders data at equal distance apart - correct answer interval
, Identify, Group, or Categorize - correct answer nominal
The color of cars is which level of measurement? - correct answer nomincal
The price of the care is which level of measurement? - correct answer ratio
Which level of measurement can be multiplied and divided? - correct answer ratio
Which level of measurement cannot be analyzed in most statistical tests? - correct
answer nominal
An online retailer selling workout apparel has a large increase in sales during
December and declares that their weekly newspaper ad resulted in higher sales. What
misuse of statistics may the retailer have used in making this decision? - correct
answer association and causation