Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using theformula below, where x represents the class midpoint, f represents the class frequency, and n represents the totalnumber of sample values. Also, compare the computed standard deviation to the standard deviation obtained fromthe original list of data values, 11.1.S=n[Σ(f-x?)] - [Σ(-x)]n(n-1)IntervalFrequencyStandard deviation =20-26127-33334-409...41-473(Round to one decimal place as needed.)48-541855-613962-68 C35stst

Class Frequency 20 - 26 1 27 - 33 3 34 - 40 9 41 - 47 3 48 - 54 18 55 - 61 39 62 - 68…

Answered: Find the standard deviation, s, of…

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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Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. S = n(n - 1) Interval 30-39 40-49 50-59 60-69 70-79 80-89 90-99 Frequency 1 4 4 3 12 37 34 Standard deviation = (Round to one decimal place as needed.)
Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0. • X • S = n(n - 1) Interval 30-36 37-43 44-50 51-57 58-64 65-71 Frequency 3 22 42 23 8 Standard deviation = (Round to one decimal place as needed.) 5
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. S= n[Σ(f.x²)]-[Σ(f.x)]² n(n-1) Interval Frequency Standard deviation = (Round to one decimal place as needed.) 20-29 2 30-39 3 1 40-49 1 C 50-59 2 60-69 8 70-79 32 80-89 38
A variable of two populations has a mean of 30 and a standard deviation of 18 for one of the populations and a mean of 30 and a standard deviation of 32 for the other population. Complete parts (a) through (c). a. For independent samples of size 9 and 16, respectively, find the mean and standard deviation of X₁ -X₂. (Assume that the sampling is done with replacement or that the population is large enough.) The mean of X₁ -X₂ is. (Type an integer or a decimal. Do not round.) The standard deviation of X₁-X₂ is (Round to four decimal places as needed.) b. Must the variable under consideration be normally distributed on each of the two populations for you to answer part (a)? Choose the correct answer below. OA. No, the variable does not need to be normally distributed for the formulas for the mean and standard deviation of x₁-x₂ to hold as long as the sample sizes are large enough, as long as the sampling is done with replacement. B. No, the formulas for the mean and standard deviation of…
Assume that we have estimated the standard deviation of a sample x₁,. ., xn ER using the sample standard deviation s = ô(x₁,x2,...,xn). What does ô(−2x1, −2x2,..., -2xn) equal? A: s B: -4s C: 4s D: -2s E: 2s
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. S= n(n- 1) Interval 20-26 27-33 34-40 41-47 48-54 55-61 62-68 Frequency 2 2 8 4 17 29 38 Standard deviation = (Round to one decimal place as needed.)
Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. in S = n(n - 1) Interval 30-36 37-43 44-50 51-57 58-64 65-71 72-78 Frequency 4 9 1 15 37 32 Standard deviation = (Round to one decimal place as needed.)

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