Histograms are used to display of data using bars of several heights
See attachment for the required histogram
The data elements are given as:
2.21, 225, 276, 3.1, 3.3, 3.5, 36, 3.77,8,8, 4,23, 4,25, 4,25, 4.6, and 4,9,
From the given histogram, the classes are:
0 - 0.9, 1 - 1.9, 2 - 2.9, 3 - 3.9 and 4 - 4.9
So, the classes and their frequencies are:
0 - 0.9 : 0
1 - 1.9 : 0
2 - 2.9 : 3
3 - 3.9 : 6
4 - 4.9 : 5
See attachment for the required histogram
Read more about histograms at:
https://brainly.com/question/17145899