PETE 404 Exam 1 Questions & Answers 2024/2025
Experiments (Sampling) (J) - ANSWERSestablishment of conditions producing one of the several outcomes
sample space (Ω) - ANSWERScollection of all possible outcomes of sampling (J)
Event (A) - ANSWERScollection of some of the possible outcome...
Experiments (Sampling) (J) - ANSWERSestablishment of conditions producing one of the several
outcomes
sample space (Ω) - ANSWERScollection of all possible outcomes of sampling (J)
Event (A) - ANSWERScollection of some of the possible outcomes of sampling (J)
Occurrence of A - ANSWERSA has occurred if the outcome of experiment (sampling) belongs to it
Union of Events (AUB) - ANSWERSthe outcome that belongs to either A or B
Intersection of Events (A∩B) - ANSWERSthe outcome that belongs to A and B
Complementary Event (Ac) - ANSWERSall outcomes in the sample space that do not belong to A
Mutually Exclusive (Disjoint) Events (A∩B∩C∩D=Ø) - ANSWERSevents that do not intersect
exhaustive sequence of events (A1UA2 UA3 ...UAn = Ω ) - ANSWERSthe sequence of events whose union
defines the entire sample space
0 to 1 - ANSWERSRange that P(A) can be
1 - ANSWERSP(Ω)
0 - ANSWERSP(Ø)
, Conditional Probability - ANSWERSgiven event A has happened what is the probability of B happening?
statistical independence - ANSWERSintuitively events A and B do not influence each other (tossing two
coins)
eikosograms - ANSWERSpreferably used to visualize independence
conditional independence and vice versa - ANSWERSindependence does not imply
Baye's Theorem 1 - ANSWERSMain application in merging different sources of information to gain more
confidences (reduce uncertainty) about the state of knowledge
bin size - ANSWERSthe shape of PDF is a function of
CDF is preferred to PDF in practice because PDF is a function of bin size - ANSWERSwhy is CDF preferred
to PDF in practice?
PDF is more intuitive and shows the spread of probability more clearly - ANSWERSwhy is PDF used?
summary statistics - ANSWERScomplementary or alternative descriptors to histograms and cumulative
distributions
a statistic - ANSWERSa value with a global view that is calculated from a sample of observations, which is
usually, but not necessarily, an estimator of some population parameter
measures of location or centrality, measures of spread or dispersion, measures of shape -
ANSWERSsummary statistics are subdivided into three categories:
histogram - ANSWERSa graphical representation of a frequency table
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