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jadensababe9151
16.02.2021 •
Mathematics
In the Data set below, what is the standard deviation?
4 2 8 5 7
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Ответ:
The standard deviation of the given data set
σ = 2.135
Step-by-step explanation:
Step(i):-
Given numbers are 4 2 8 5 7
Mean of the numbers
= 5.2
The mean of the numbers (μ) = 5.2
Step(ii):-
x : 4 2 8 5 7
x-μ : -1.2 -3.2 2.8 -0.2 1.8
(x-μ)² : 1.44 10.24 7.84 0.04 3.24
The standard deviation of the given data
σ = √Σ( x-μ)² / N
σ =![\sqrt{ \frac{1.44+10.24+7.84+0.04+3.24}{5}}](/tpl/images/1121/7414/98529.png)
σ = 2.135
Ответ:
7x9= 63 inches