8 data
1
6
11
16
21
26
31
Frequency
[Graphs generated by this script: setBorder(47,40,20,5); initPicture(0,31,0,8);axes(1000,2,1 ,1000,2); fill="blue"; textabs([165,0],"data","above");lin e([1,-0.16],[1,0.16]); text([1,0],"1","below");line([6,-0. 16],[6,0.16]); text([6,0],"6","below");line([11,-0 .16],[11,0.16]); text([11,0],"11","below");line([16, -0.16],[16,0.16]); text([16,0],"16","below");line([21, -0.16],[21,0.16]); text([21,0],"21","below");line([26, -0.16],[26,0.16]); text([26,0],"26","below");line([31, -0.16],[31,0.16]); text([31,0],"31","below");textabs([ 0,115],"Frequency","right",90);rect ([1,0],[6,8]);rect([6,0],[11,4]);re ct([11,0],[16,3]);rect([16,0],[21,5 ]);rect([21,0],[26,2]);rect([26,0], [31,7]);]

Based on the histogram above, what is the frequency of the class containing the value 22