TV Sample xf(x)xf(x)xf(x)m-1.20(x-m)^f(x)(x-m)^(fx)Units soldNumber of days Variance08000.400.00-1.201.440.400.57615010.250.25-0.200.040.250.01024020.200.400.800.640.200.12831030.050.151.803.240.050.16242040.100.402.807.840.100.784 200 1.001.20 1.660 E=1.20 Standard Deviation 1.2884 Hello, This is a demonstration example where the answers are listed above but i am not understand how 1.2884 is the standard deviation where the variance is 1.660. what are the mathmatical functions needed to reach 1.2884. Thanks!

Answered: TV Sample x f(x) x f(x)…

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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Related questions

Question

TV Sample
x	f(x)	x	f(x)	xf(x)	m-1.20	(x-m)^	f(x)	(x-m)^(fx)
Units sold	Number of days							Variance
0	80	0	0.40	0.00	-1.20	1.44	0.40	0.576
1	50	1	0.25	0.25	-0.20	0.04	0.25	0.010
2	40	2	0.20	0.40	0.80	0.64	0.20	0.128
3	10	3	0.05	0.15	1.80	3.24	0.05	0.162
4	20	4	0.10	0.40	2.80	7.84	0.10	0.784
	200		1.00	1.20				1.660
				E=1.20

				Standard Deviation
							1.2884

Hello, This is a demonstration example where the answers are listed above but i am not understand how 1.2884 is the standard deviation where the variance is 1.660. what are the mathmatical functions needed to reach 1.2884. Thanks!

Expert Solution

Step 1

$R e l a t i o n s h i p b e t w e e n v a r i a n c e a n d s \tan d a r d d e v i a t i o n s \tan d a r d d e v i a t i o n = \sqrt{v a r i a n c e}$