Answered: (a) Order the scores 45, 60, 70, 72,…

(a) Order the scores 45, 60, 70, 72, and 85 from most frequent to least frequent. (b) What is the percentile of a score of 60? (c) What proportion of the sample scored below 70?

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

19. The following shows the distribution of final exam
scores in a large introductory psychology class. The
proportion of the total area under the curve is
given for two segments.
f
45
.20
50 55
60
.30
65 70 75 80 85 90 95
Exam scores
(a) Order the scores 45, 60, 70, 72, and 85 from
most frequent to least frequent.
(b) What is the percentile of a score of 60?
(c) What proportion of the sample scored
below 70?
(d) What proportion scored between 60 and 70?
(e) What proportion scored above 80?
(f) What is the percentile of a score of 80?

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