## Question 934:

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 (Ogive).

Use the Ogive, estimate percentile of a student who scored 200 points in the test? What is the student

score must be in order in the 90 percentile?

Score

classes

Freq. Score

upper

limit

Cumulative

Freq.

Relative

Cumulative

Freq.

< 196.5 0 < 196.5

196.5 – 217.5 5 < 217.5

217.5 – 238.5 17 < 238.5

238.5 – 259.5 22 < 259.5

259.5 – 280.5 48 < 280.5

280.5 – 301.5 22 < 301.5

301.5 – 322.5 6 < 322.5

Total 120