A statistics student used a device to record the number of steps she took each day for six days. Here are data she recorded.

$\backslash$table$[[$Day$,1,2,3,4,5,6],[$Steps$,13,000,11,100,9,900,10,100,11,000,11,000]]$

What is the value of the IQR $?$ Interpret this value.

a$.$ The IQR is $1,000$ steps. The range of the middle half of this student's daily steps is $1,000$ steps.

b$.$ The IQR is $1,000$ steps. The range of the lower half of this student's daily steps is $1,000$ steps.

c$.$ The IQR is $11,000$ steps. The range of the lower half of this student's daily steps is $11,000$ steps.

d$.$ The IQR is $11,000$ steps. The range of the middle half of this student's daily steps is $11,000$ steps.