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...

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
For the same data, find the approximate scores that correspond to these percentiles.
a) 15th
b) 29th
c) 43rd
d) 65th
e) 80th