You want to make a statement about the variability in the costs of personnel shelters. After collecting sample data (cost in $K) on 14 shelters you perform some preliminary calculations.

[Image Description: Summation of (Xi - Xbar)2 =545.50]

Given the information provided, the standard deviation is:

$ 6.24K

$41.96K

$38.96K

$ 6.48K