Incorrect statement about the median on page 18

[andraxin]

If the median is 100 ms, half of the requests take longer than 100 ms, and half of the requests take less than 100 ms.

This formulation implies a strict lower/upper bound, which the median need not be.
Just consider a sequence where every single entry is uniformly 100 ms.
The statement is easily corrected to reflect the intended meaning by inserting 2 negations.

If the median is 100 ms, half of the requests take no longer than 100 ms, and half of the requests take no less than 100 ms.

[chiphuyen]

Good point. Thanks @andraxin!