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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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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
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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