1. It describes the amount of spread, dispersion or variability of the item in a distribution. a) mean b) variance c) mediano.0 d) frequency 2. It is the measure of central location of a random variable and sometimes called the expected value or expectation. a) mean b) variance letot leulsy c) standard deviation d) median 3. Which of the following does not belong to the steps in finding the variance of probability distribution in a random variable? a) find the mean of the probability distribution b) add the mean from each value of a random variable x c) square the results of the difference between mean and random variable x d) multiply the results obtained in squaring the difference between mean and random variable x by the corresponding probability. 4. Which symbol represents "mean of probability distribution"? a) Σ b) o c) H d) a 5. Which of the following is the formula in solving mean of probability distribution. a) Ex P(x) uo bb) Ex? + P(x) 1 C) Ex? + P(x) - d) VEx? · P(x) 6. The variance of discrete probability distribution is given by the formula as - a) Ex² · P(x) – µ? b) Ex P(x)-u² c) Ex? . P(x) – µ? d) E[x2 · P(x)] -H
1. It describes the amount of spread, dispersion or variability of the item in a distribution. a) mean b) variance c) mediano.0 d) frequency 2. It is the measure of central location of a random variable and sometimes called the expected value or expectation. a) mean b) variance letot leulsy c) standard deviation d) median 3. Which of the following does not belong to the steps in finding the variance of probability distribution in a random variable? a) find the mean of the probability distribution b) add the mean from each value of a random variable x c) square the results of the difference between mean and random variable x d) multiply the results obtained in squaring the difference between mean and random variable x by the corresponding probability. 4. Which symbol represents "mean of probability distribution"? a) Σ b) o c) H d) a 5. Which of the following is the formula in solving mean of probability distribution. a) Ex P(x) uo bb) Ex? + P(x) 1 C) Ex? + P(x) - d) VEx? · P(x) 6. The variance of discrete probability distribution is given by the formula as - a) Ex² · P(x) – µ? b) Ex P(x)-u² c) Ex? . P(x) – µ? d) E[x2 · P(x)] -H
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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![-1. It describes the amount of spread, dispersion or variability of the item in a
distribution.
000.02
a) mean
b) variance
c) median
d) frequency
2. It is the measure of central location of a random variable and sometimes called the
expected value or expectation.
a) mean
b) variance
c) standard deviation d) median
3. Which of the following does not belong to the steps in finding the variance of
probability distribution in a random variable?
a) find the mean of the probability distribution
b) add the mean from each value of a random variable x
C) square the results of the difference between mean and random variable x
d) multiply the results obtained in squaring the difference between mean and
random variable x by the corresponding probability.
4. Which symbol represents "mean of probability distribution"?
a) E
b) o
d) a
5. Which of the following is the formula in solving mean of probability distribution.
a) Σx - P(x)
b) Ex? ÷ P(x)
c) Ex? + P(x)
d) VEX2 - P(x)
6. The variance of discrete probability distribution is given by the formula as
a) VEX2 · P(x) – µ2 b) Ex P(x)- u2
c) Ex? P(x) – u?
d) E[x? · P(x)] – H](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2a2e8515-83d9-400e-bda3-3e3a7521a164%2F5df1b247-babb-4ce2-9f69-85a70a920b39%2Fw2ij1ng_processed.jpeg&w=3840&q=75)
Transcribed Image Text:-1. It describes the amount of spread, dispersion or variability of the item in a
distribution.
000.02
a) mean
b) variance
c) median
d) frequency
2. It is the measure of central location of a random variable and sometimes called the
expected value or expectation.
a) mean
b) variance
c) standard deviation d) median
3. Which of the following does not belong to the steps in finding the variance of
probability distribution in a random variable?
a) find the mean of the probability distribution
b) add the mean from each value of a random variable x
C) square the results of the difference between mean and random variable x
d) multiply the results obtained in squaring the difference between mean and
random variable x by the corresponding probability.
4. Which symbol represents "mean of probability distribution"?
a) E
b) o
d) a
5. Which of the following is the formula in solving mean of probability distribution.
a) Σx - P(x)
b) Ex? ÷ P(x)
c) Ex? + P(x)
d) VEX2 - P(x)
6. The variance of discrete probability distribution is given by the formula as
a) VEX2 · P(x) – µ2 b) Ex P(x)- u2
c) Ex? P(x) – u?
d) E[x? · P(x)] – H
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