Answer:
14
Step-by-step explanation:
Question:
1. How many students have a grade of lower than 80%
Answer:
We select the boundary 79.5 because it is lower than 80. Based on
the Ogive, the 79.5 has a plot of 14, thus there are 14 students with
grades lower than 80. We cannot select 84.5 because it is more than 80.
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