MSIS 3223 Exam 2 REVISION QUESTIONS AND THEIR EXPECTED ANSWERS
0 view 0 purchase
Course
MSIS 3223
Institution
MSIS 3223
Conditional probability is the probability of occurrence of one event 'A' given that another event 'B' is known to be true or already occurred.
True
Which of the following is true of normal distributions?
The mean, median, and mode are all equal.
Probability is the likelihood that an outcome oc...
conditional probability is the probability of occu
Written for
MSIS 3223
All documents for this subject (166)
Seller
Follow
AcademicSuperStore
Content preview
MSIS 3223 Exam 2 REVISION
QUESTIONS AND THEIR EXPECTED
ANSWERS
Conditional probability is the probability of
occurrence of one event 'A' given that another event
'B' is known to be true or already occurred.
True
Which of the following is true of normal distributions?
The mean, median, and mode are all equal.
Probability is the likelihood that an outcome occurs.
True
The union of two events contains all outcomes that
belong to either of the two events.
True
Conditional probability is the probability of
occurrence of one event 'A' given that another event
'B' is known to be true or has already occurred.
True
A probability distribution is the characterization of the
possible values that a random variable may assume
along with the probability of assuming these values.
True
A random variable is a numerical description of the
outcome of an experiment.
True
The expected value of a random variable corresponds
to the notion of the median for a sample.
, False
The normal distribution is a continuous distribution
that is described by the familiar bell-shaped curve and
is perhaps the most important distribution used in
statistics.
True
The triangular distribution is defined by three
parameters: the mean, median, and mode.
False
Higher variance implies low uncertainty.
False
Variance calculates the probability of a random
variable lying within a certain interval.
True
Regression models of ______ data focus on predicting
the future.
time-series
Regression analysis is a tool for building
mathematical and statistical models that characterize
relationships between a dependent variable and one
or more independent, or explanatory, variables.
True
In predictive analysis models, a second-order
polynomial has only one hill or valley.
True
Excel's Trendline feature cannot be used in modeling
trends which include time variables.
Group of answer choices
False
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller AcademicSuperStore. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
