Exam Questions and Verified Correct Answers
What is the first stage of determining task timing in the critical path method?
ANSWER: identifying early start and early finish times of each task.
Which of the following statements about crashing is TRUE? ANSWER: Crashing a
critical path activity may shorten the length of the project.
What tool is used in the PERT methodology to estimate the risk of missing a project
deadline? ANSWER: the Central Limit Theorem
is a style of project network diagram in which arrows represent
tasks and their connections with nodes represent precedence relationships.
ANSWER: AOA
Which of the following statements regarding a time series technique is true?
ANSWER: Time series techniques focus on the historical behavior of some
outcome of interest to predict its future behavior.
Which time series technique predicts a future value by combining the previous
prediction and some portion of the error in the prediction? ANSWER: Simple
exponential smoothing
Which of the following correlation coefficient values represents the strongest
positive correlation between two factors in a data set? ANSWER: r-
=0.931
STUDOVA
, It is NOT possible for a forecast to be both responsive and inaccurate. ANSWER:
False
In a time series, what is a black swan? ANSWER: a particularly high-impact
incident of extreme consequence that is unexpected or considered highly
improbable
Calculating a regression equation for a given set of data identifies the specific
values of ANSWER: the slope and intercept
Averaging forecast errors over time results in the performance measure known as
*****? ANSWER: mean error
What is the ME for the forecast errors of 5, 10, 0, and -3? ANSWER: 3
one-time shocks to a time series from a distinctly external influence, such as a
sudden dip in consumer sales after a disruptive event, are called
variations ANSWER: exogenous
Several forecasting methods rely on insights from a group of people, but which
method does NOT have the group discuss their opinions? ANSWER: Delphi
Groups
Which of the following forecasting measures calculates the average of the absolute
values of a set of forecast errors? ANSWER: MAD
STUDOVA