collge1 collge1
  • 14-11-2016
  • Mathematics
contestada

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

Respuesta :

Spartiate Spartiate
  • 14-11-2016
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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