MSIS 3223 - Nord - Okstate - Exam 2
CORRECT 100%
What is the probability that a respondent is male and prefers arts? - ANSWER2/15
which of the following is the weighted average of the squared deviations from the expected value? -
ANSWERvariance
which of the following is a continuous random variable? - ANSWERnumber of students in class
which of the following is true about probability density functions? - ANSWERit calculates the
probability of a random variable lying within a certain interval
which of the following is true about the classical definition of probability? - ANSWERif the process
that generates the outcomes is known, probabilities can be deduced from theoretical arguments.
the _______ of a random variable corresponds to the notion of the mean, or average, of a sample. -
ANSWERexpected value
A regression model that involves a single independent variable is called... - ANSWERsimple regression
which of the following is true of normal distributions? - ANSWERmean, median, and mode are all
equal
regression models of _________ data focus on predicting the future - ANSWERtime series
Which of the following is true of linear functions used in predictive analytical models? - ANSWERit is
used when there is a steady decrease or increase over a range of a variable
In modeling relationships and trends, which one is used for cross-sectional data? - ANSWERScatter
chart
CORRECT 100%
What is the probability that a respondent is male and prefers arts? - ANSWER2/15
which of the following is the weighted average of the squared deviations from the expected value? -
ANSWERvariance
which of the following is a continuous random variable? - ANSWERnumber of students in class
which of the following is true about probability density functions? - ANSWERit calculates the
probability of a random variable lying within a certain interval
which of the following is true about the classical definition of probability? - ANSWERif the process
that generates the outcomes is known, probabilities can be deduced from theoretical arguments.
the _______ of a random variable corresponds to the notion of the mean, or average, of a sample. -
ANSWERexpected value
A regression model that involves a single independent variable is called... - ANSWERsimple regression
which of the following is true of normal distributions? - ANSWERmean, median, and mode are all
equal
regression models of _________ data focus on predicting the future - ANSWERtime series
Which of the following is true of linear functions used in predictive analytical models? - ANSWERit is
used when there is a steady decrease or increase over a range of a variable
In modeling relationships and trends, which one is used for cross-sectional data? - ANSWERScatter
chart
