- A(75, 18)
- B(70, 18)
- C(80, 18)
- D(75, 12)
Step-by-Step Solution
A frequency polygon point uses (class mark, frequency). Class mark of 70-80 = 75, frequency = 18, giving (75, 18).
Answer: A) (75, 18)
In a histogram of test scores, the class 60-70 has frequency 12 and the class 70-80 has frequency 18.
In a frequency polygon, the point for the class 70-80 is plotted at:
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