MSIS 3223 Test 2 Questions All Answered Correctly.
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Course
MSIS 3223
Institution
MSIS 3223
Which of the following is true of normal distributions? - Answer The Mean, median and mode are all equal
Probability is the likelihood that an outcome occurs.T/F - Answer True
The union of two events contains all outcomes that belong to either of the two events. T/F - Answer True
Condit...
MSIS 3223 Test 2 Questions All
Answered Correctly.
Which of the following is true of normal distributions? - Answer The Mean, median and mode are all
equal
Probability is the likelihood that an outcome occurs.T/F - Answer True
The union of two events contains all outcomes that belong to either of the two events. T/F - Answer
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. T/F - Answer 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. T/F - Answer True
A random variable is a numerical description of the outcome of an experiment. T/F - Answer True
The expected value of a random variable corresponds to the notion of the median for a sample. T/F -
Answer 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. T/F - Answer True
The triangular distribution is defined by three parameters: the mean, median, and mode. T/F - Answer
False
Variance calculates the probability of a random variable lying within a certain interval. T/F - Answer
True
True or False
Regression analysis is a tool for building mathematical and statistical models that characterize
relationships between a dependent (ratio) variable and one or more independent, or explanatory
variables (ratio or categorical), all of which are numerical. T/F - Answer True
Regression models of ____ data focus on predicting the future.
a. time-series
b. panel
c. cross sectional
d. missing - Answer a. time-series
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