The following table shows the marks gained in an arithmetic examination by 100 pupils. ne maximum possible mark was 100. 1. Complete the table. Class Interval Class Mark Class Boundary cf 1-10 11-20 21-30 4 31-40 8. 41-50 14 51 - 60 23 61 - 70 17 71-80 14 81-90 11 91-100 N = 100 2. Identify: a. i b. total frequency c. lower limit of the class interval 31- 40 d. upper boundary of the class interval 71 - 80 3. How many pupils got marks less than 70.5? 4. How many pupils got marks greater than 50.5? 5. What percent of the pupils got score lower than 61. 52
The following table shows the marks gained in an arithmetic examination by 100 pupils. ne maximum possible mark was 100. 1. Complete the table. Class Interval Class Mark Class Boundary cf 1-10 11-20 21-30 4 31-40 8. 41-50 14 51 - 60 23 61 - 70 17 71-80 14 81-90 11 91-100 N = 100 2. Identify: a. i b. total frequency c. lower limit of the class interval 31- 40 d. upper boundary of the class interval 71 - 80 3. How many pupils got marks less than 70.5? 4. How many pupils got marks greater than 50.5? 5. What percent of the pupils got score lower than 61. 52
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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Answer Asap. Example was provided. Thank you
Transcribed Image Text:Example 4.
Find the class marks, class boundaries, and cumulative frequency of the table
below.
Class Interval
f
10 11
1
12-13
3.
14 15
3
16-17
3
18 -19
6.
20
- 21
22-23
8
24 25
26 27
28 29
6.
10
24
Solution:
Class Interval
Class Boundary
9.5 11.5
11.5 13.5
13.5 15.5
Class Mark
cf
10-11
10.5
1
12-13
3
12.5
4.
14 15
3
14.5
7.
16 - 17
3
16.5
15.5 17.5
10
18- 19
6.
18.5
17.5 19.5
16
20- 21
6.
20.5
19.5 21.5
22
22-23
8.
22.5
21.5- 23.5
30
24-25
24.5
23.5 25.5
36
26-27
10
26.5
25.5 27.5
46
28-29
24
28.5
27.5 29.5
60
Transcribed Image Text:The following table shows the marks gained in an arithmetic examination by 100 pupils.
The maximum possible mark was 100.
1. Complete the table.
Class Interval
f
Class Mark
Class Boundary
cf
1-10
11-20
21-30
4.
31-40
8
41-50
14
51 -60
23
61-70
17
71-80
14
81-90
11
91-100
N = 100
2. Identify:
a. i
b. total frequency
c. lower limit of the class interval 31- 40
d. upper boundary of the class interval 71 - 80
3. How many pupils got marks less than 70.5?
4. How many pupils got marks greater than 50.5?
5. What percent of the pupils got score lower than 61.5?
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