The number of data are represented in the histogram is 37. See the explanation for same below.
The Bin size is given as the difference between two consecutive lower and upper limits
Thus, the number of pieces of data are:
=2+6+5+7+8+9
=37
A diagram with rectangles whose width is equal to the class interval and whose size is related to the frequency of a variable is called a histogram.
Learn more about histogram:
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