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MSIS 3223 - Nord - Okstate - Exam 2 CORRECT 100%

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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 wh...

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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

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