(a) Describe the type of graphs shown in the above figure.(b) If 60% is the minimum pass mark, how many children (i) the first test(ii) the second test.(c) Write down the arithmetic mean of the results of the first test. 109.87number6ofchildren531714,52229,5 3744,55259,56774,58289,597104,5PercentagesA group of 30 grade 3 children did two spelling tests, one at the beginning of term and one at the end. Themarks(%) on the two tests were grouped into classes width of 15%, the first class being 0 - 14, the second classbeing 15 - 29, etc... The graphs are shown in the above figure. The solid line represents the first test and the dashedline represents the second test.first testsecond test002.

The solution of above question is written below.

(a) Describe the type of graphs shown in the above figure. (b) If 60% is the minimum pass mark, how many children (i) the first test (ii) the second test. (c) Write down the arithmetic mean of the results of the first test.

(a) Describe the type of graphs shown in the above figure. (b) If 60% is the minimum pass mark, how many children (i) the first test (ii) the second test. (c) Write down the arithmetic mean of the results of the first test.

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Question

100%

(a) Describe the type of graphs shown in the above figure.

(b) If 60% is the minimum pass mark, how many children
(i) the first test
(ii) the second test.
(c) Write down the arithmetic mean of the results of the first test.

10
9.
8
7
number
6
of
children
5
3
1
7
14,5
22
29,5 37
44,5
52
59,5
67
74,5
82
89,5
97
104,5
Percentages
A group of 30 grade 3 children did two spelling tests, one at the beginning of term and one at the end. The
marks(%) on the two tests were grouped into classes width of 15%, the first class being 0 - 14, the second class
being 15 - 29, etc... The graphs are shown in the above figure. The solid line represents the first test and the dashed
line represents the second test.
first test
second test
00
2.

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