Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 3 - Data Description - 3-3 Measures of Position - Exercises 3-3 - Page 160: 21


For 228, percentile=$6th$ For 489, percentile=$17th$ For 524, percentile=$28th$ For 597, percentile=$39th$ For 623, percentile=$50th$ For 659, percentile=$61st$ For 736, percentile=$72nd$ For 777, percentile=$83rd$ For 804, percentile=$94th$ 597

Work Step by Step

Find the percentile rank of each value. n=9, use the formula for percentile rank, we have For 228, percentile=$\frac{0+0.5}{9}\times100\approx6th$ For 489, percentile=$\frac{1+0.5}{9}\times100\approx17th$ For 524, percentile=$\frac{2+0.5}{9}\times100\approx28th$ For 597, percentile=$\frac{3+0.5}{9}\times100\approx39th$ For 623, percentile=$\frac{4+0.5}{9}\times100=50th$ For 659, percentile=$\frac{5+0.5}{9}\times100\approx61st$ For 736, percentile=$\frac{6+0.5}{9}\times100\approx72nd$ For 777, percentile=$\frac{7+0.5}{9}\times100\approx83rd$ For 804, percentile=$\frac{8+0.5}{9}\times100\approx94th$ What value corresponds to the 40th percentile? $c=\frac{40\times9}{100}\approx4$ Identify the 4th value as: 597
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.