Consider the following sample data:

$425032523848$

a$.$ Calculate the range.

b$.$ Calculate MAD. $($Round your intermediate calculations to at least $4$ decimal places and final answer to $2$ decimal places.$)$

c$.$ Calculate the sample variance. $($Round your intermediate calculations to at least $4$ decimal places and final answer to $2$ decimal places.$)$

d$.$ Calculate the sample standard deviation. $($Round your intermediate calculations to at least $4$ decimal places and final answer to $2$ decimal places.$)$