Answered: What was the sample size? b. What…

What was the sample size? b. What percent of participants had a score of 4? c. What is the percentile rank for a score of 5? d. What is the score corresponding to the 80th percentile?

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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Question

Consider the following frequency distribution:

Score Freq 7,18,6,77,5,20,4,7,3,3,2,1,1,3

ScoreFrequency: 7,18,6,77,5,20,4,7,3,3,2,1,1,3

a. What was the sample size?

b. What percent of participants had a score of 4?

c. What is the percentile rank for a score of 5?

d. What is the score corresponding to the 80th percentile?

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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