\BeginKnitrBlock{exercise}\iffalse{-91-78-111-110-45-114-101-112-114-101-115-101-110-116-97-116-105-118-101-32-115-97-109-112-108-101-115-93-}\fi{}<div class="exercise"><span class="exercise" id="exr:unnamed-chunk-8"><strong>(\#exr:unnamed-chunk-8)  \iffalse (Non-representative samples) \fi{} </strong></span>Can you think of a scenario that would result in our sample being non-representative?</div>\EndKnitrBlock{exercise}