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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 31PPS

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Question

Draw a percentage curve for the following distribution of marks obtained by
700 students in an examination:
Marks
No. of students
Marks
No. of students
0-9
9.
50-59
102
10-19
42
60-69
71
20-29
61
70-79
23
30-39
140
80-89
2
40-49
250
Find from the graph () the marks at the 20th percentile, and
equivalent to a mark of 65.
(i)
the percentile

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