1 | Page
IEE 380 Exam 2 Questions and Correct
Answers
The sample mean is analogous to the center of mass in
mechanics. Ans: True
The units associated with the sample standard deviation are the
squared measurement units of the original sample. Ans: False
If the sample variance is calculated from a sample of n
observations, then it has n - 1 degrees of freedom. Ans: True
The median of a sample is the most frequently occurring value in
the sample. Ans: False
Discrete random variables take on values across a continuum. Ans:
False
The binomial distribution arises from a series of Bernoulli trials.
Ans: True
The Poisson distribution is widely used as a model of the number
of events in an interval. Ans: True
The probability mass function of a discrete random variable is a
description of the probabilities associated with each possible value
of the random variable. Ans: True
© 2025 All rights reserved
IEE 380 Exam 2 Questions and Correct
Answers
The sample mean is analogous to the center of mass in
mechanics. Ans: True
The units associated with the sample standard deviation are the
squared measurement units of the original sample. Ans: False
If the sample variance is calculated from a sample of n
observations, then it has n - 1 degrees of freedom. Ans: True
The median of a sample is the most frequently occurring value in
the sample. Ans: False
Discrete random variables take on values across a continuum. Ans:
False
The binomial distribution arises from a series of Bernoulli trials.
Ans: True
The Poisson distribution is widely used as a model of the number
of events in an interval. Ans: True
The probability mass function of a discrete random variable is a
description of the probabilities associated with each possible value
of the random variable. Ans: True
© 2025 All rights reserved
