The fraction of the group who had a score of 45 or more is 20/31
What is a Histogram ?
It is a method of graphical display of data where the data is displayed using bars of various heights .
From the histogram , we can calculate by either determining the frequency value of group who had a score of 45 or more and divide it by total frequency or
By calculating the number of square in each group who had a score of 45 or more and dividing by the total number of squares.
There are total 31 squares
The health score for a group of people who had a score of 45 or more is 20
Therefore the fraction of the group who had a score of 45 or more is 20/31
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