MSIS Principals to Data analytics 3223 Exam #2 correctly answered

MSIS Principals to Data analytics 3223
Exam #2 correctly answered

The more scattered the data the _________ standard error

A. Smaller

B. Larger

B.




Probability is the likelihood that an outcome occurs.

True

False

True




The union of two events contains all outcomes that belong to either of the two events.

True

False

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

,False

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

False

True




A random variable is a numerical description of the outcome of an experiment.

True

False

True




The expected value of a random variable corresponds to the notion of the median for a sample

True

False

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

, False

True




The triangular distribution is defined by three parameters. the mean, the median, and the mode

True

False

False




Higher variance implies low uncertainty.

True

False

False




In Normal distributions, Mean = Median = Mode

True




Excel's Trendline feature cannot be used in modeling trends which include time variables.

True

False

False