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. s=n∑f•x2−∑(f•x)2n(n−1) Its supposed to use the "Standard Deviation" formula Interval30-3940-4950-5960-6970-7980-89 Frequency124402351 Standard deviation= (Round to one decimal place as needed.) Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation,9.0? A. The computed value is significantly greater than the given value. B. The computed value is significantly less than the given value. C. The computed value is not significantly different from the given value.

Data represents the frequency distribution with their class intervals.

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 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.

s=n∑f•x2−∑(f•x)2n(n−1) Its supposed to use the "Standard Deviation" formula

Interval	30-39	40-49	50-59	60-69	70-79	80-89
Frequency	1	24	40	23	5	1

Standard deviation=

(Round to one decimal place as needed.)

Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation,

9.0?

A. The computed value is significantly greater than the given value.

B. The computed value is significantly less than the given value.

C. The computed value is not significantly different from the given value.

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