Answered: Question 22 For each statistic…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question 22 For each statistic -Parameter pair below calculate the sampling error Suppose a population has a mean of μ = 131 and a random sample size n = 94 drawn from this population has a sample mean of x̅ =147. Determine the sampling error of x̅ ___ Suppose a population has a standard deviation of σ = 75 and a random sample size n = 167 drawn from this population has a sample standard deviation of s = 52 determine the sampling error of s Supposed 62% of a population possesses a given characteristic and 59% of a random sample of size n = 132 Drawn from this population possesses the same characteristics determine the sampling error of p̂

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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