During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items.

[Graphs generated by this script: setBorder(54,40,20,5); initPicture(0,7.5,0,15);axes(1000,2,1,1000,2); fill="blue"; stroke="black";line([0.5,-0.3],[0.5,0.3]); text([0.5,0],"0.5","below");line([1.5,-0.3],[1.5,0.3]); text([1.5,0],"1.5","below");line([2.5,-0.3],[2.5,0.3]); text([2.5,0],"2.5","below");line([3.5,-0.3],[3.5,0.3]); text([3.5,0],"3.5","below");line([4.5,-0.3],[4.5,0.3]); text([4.5,0],"4.5","below");line([5.5,-0.3],[5.5,0.3]); text([5.5,0],"5.5","below");line([6.5,-0.3],[6.5,0.3]); text([6.5,0],"6.5","below");line([7.5,-0.3],[7.5,0.3]); text([7.5,0],"7.5","below");textabs([165,0],"# items over 10","above");textabs([0,115],"Frequency","right",90);rect([0.5,0],[1.5,6]);rect([1.5,0],[2.5,9]);rect([2.5,0],[3.5,10]);rect([3.5,0],[4.5,15]);rect([4.5,0],[5.5,2]);rect([5.5,0],[6.5,7]);rect([6.5,0],[7.5,6]);]

What is the most frequent number of over-the-limit items for this data set?

ans =

What is the frequency of the most frequent number of over-the-limit items?

ans =