BNAL 206 TEST 2 QUESTIONS AND VERIFIED
ANSWERS
Probability Distribution of a Discrete Variable - Answers - mutually exclusive list of all
the probable numerical outcomes along with the probability of occurrence with each
outcome.
expected value of a discrete variable - Answers - is the population mean "u" of its
probability distribution
to calculate expected value of a discrete variable you... - Answers - multiply each
possible outcome by its corresponding probability and then sum these products
you compute the variance of a probability distribution by... - Answers - multiplying each
possible square difference by its corresponding probability and then summing the
resulting products.
mathematical expression (model) - Answers - can be used to calculate the probability of
the value, or outcome for a variable of interest.
properties of binomial distribution - Answers - - the sample consist of a fixed number of
observations, n
- each observation is classified into one of two mutually exclusive and collectively
exhaustive categories
-The value of any observation is independent of the value of any other observation.
use binomial distribution when.. - Answers - the discrete variable is the number of
events of interest in n observations
rule of combinations - Answers - The number of combinations of selecting x objects out
of n objects
Binomial Distribution - Answers - a frequency distribution of the possible number of
successful outcomes in a given number of trials in each of which there is the same
probability of success.
the mean (expected value) of the binomial distribution - Answers - is equal to the
product of n and pie
Discrete Variables - Answers - produce outcomes that come from a counting process
(e.g. number of classes you are taking).
Continuous Variables - Answers - variables produce outcomes that come from a
measurement (e.g. your annual salary, or your weight).
ANSWERS
Probability Distribution of a Discrete Variable - Answers - mutually exclusive list of all
the probable numerical outcomes along with the probability of occurrence with each
outcome.
expected value of a discrete variable - Answers - is the population mean "u" of its
probability distribution
to calculate expected value of a discrete variable you... - Answers - multiply each
possible outcome by its corresponding probability and then sum these products
you compute the variance of a probability distribution by... - Answers - multiplying each
possible square difference by its corresponding probability and then summing the
resulting products.
mathematical expression (model) - Answers - can be used to calculate the probability of
the value, or outcome for a variable of interest.
properties of binomial distribution - Answers - - the sample consist of a fixed number of
observations, n
- each observation is classified into one of two mutually exclusive and collectively
exhaustive categories
-The value of any observation is independent of the value of any other observation.
use binomial distribution when.. - Answers - the discrete variable is the number of
events of interest in n observations
rule of combinations - Answers - The number of combinations of selecting x objects out
of n objects
Binomial Distribution - Answers - a frequency distribution of the possible number of
successful outcomes in a given number of trials in each of which there is the same
probability of success.
the mean (expected value) of the binomial distribution - Answers - is equal to the
product of n and pie
Discrete Variables - Answers - produce outcomes that come from a counting process
(e.g. number of classes you are taking).
Continuous Variables - Answers - variables produce outcomes that come from a
measurement (e.g. your annual salary, or your weight).
