(Solution) - The data shown represent the scores on a national achievement -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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The data shown represent the scores on a national achievement test for a group of 10th-grade students. Find the approximate percentile ranks of these scores by constructing a percentile graph.
a. 220
b. 245
c. 276
d. 280
e. 300
Score Frequency
196.5?217.5........5
217.5?238.5 .......17
238.5?259.5 .......22
259.5?280.5 .......48
280.5?301.5 .......22
301.5?322.5 .......6