Total number of customers who have ages more than 80 years = 21
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
Given are a stem and leaf plot.
This shows the age of customers who were interviewed in a survey by a store.
From the plot, we can say that 10th digit is represented by the stem
For greater than 32, obviously, 1,2 stem values will not work.
For stem 3, we can leave 30 and 31 start with 2 in leaf and 3 n stem
We have 32, onwards 7 persons
Similarly, for 4, we have 6, for 5 we have 5, for 6 we have 4 and for 7 we have 1
Hence total number of customers who have ages more than 80 years = 21
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