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22. The following table shows four rows from a frequency distribution table for a sample of n = 20 scores. Use interpolation to find the percentiles and percentile ranks requested: X 40-49 30-39 20-29 10-19 f 4 7 4 3 Cf 20 16 9 5 a. Find the 30th percentile. b. Find the 52nd percentile. c. What is the percentile rank for X = 46? d. What is the percentile rank for X = 21? C% 100 80 45 25

22. The following table shows four rows from a frequency distribution table for a sample of n = 20 scores. Use interpolation to find the percentiles and percentile ranks requested: X 40-49 30-39 20-29 10-19 f 4 7 4 3 Cf 20 16 9 5 a. Find the 30th percentile. b. Find the 52nd percentile. c. What is the percentile rank for X = 46? d. What is the percentile rank for X = 21? C% 100 80 45 25

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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(22. The following table shows four rows from a frequency 1 distribution table for a sample of n 20 scores. Use interpolation to find the percentiles and percentile ranks requested: X 40-49 30-39 20-29 10-19 f 4 7 4 3 Cf 20 16 9 5 a. Find the 30th percentile. b. Find the 52nd percentile. c. What is the percentile rank for X = 46? d. What is the percentile rank for X = 21? C% 100 80 45 25
Transcribed Image Text:(22. The following table shows four rows from a frequency 1 distribution table for a sample of n 20 scores. Use interpolation to find the percentiles and percentile ranks requested: X 40-49 30-39 20-29 10-19 f 4 7 4 3 Cf 20 16 9 5 a. Find the 30th percentile. b. Find the 52nd percentile. c. What is the percentile rank for X = 46? d. What is the percentile rank for X = 21? C% 100 80 45 25
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