\BeginKnitrBlock{exercise}\iffalse{-91-82-101-112-111-114-116-105-110-103-32-117-110-99-101-114-116-97-105-110-116-121-93-}\fi{}<div class="exercise"><span class="exercise" id="exr:unnamed-chunk-67"><strong>(\#exr:unnamed-chunk-67)  \iffalse (Reporting uncertainty) \fi{} </strong></span>What should you think if you see a paper that contains a figure with error bars, without specifying what they represent?</div>\EndKnitrBlock{exercise}