collge1 collge1

13-11-2016
Mathematics

Answered

4.67,4.98,4.34 minutes what is the standard deviation for these three songs

Verified Answer :

Spartiate Spartiate

13-11-2016

first compute the mean:

(4.67 + 4.98 + 4.34) / 3 = 4.66

then compute the variance:

(4.67-4.66)^2 = 0.0001
(4.98-4.66)^2 = 0.1024
(4.34-4.66)^2 = 0.1024

sum of the three = 0.2049

then take the square root:

= 0.452

the standard deviation is 0.452

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