Q9. The following table shows the marks of 40 students in chemistry mock exam, their teacher wants to prepare a frequency distribution table using seven classes, further the teacher wants to know the average mark for this group & the standard deviation. 13.26 32.43 18.10 58.23 64.00 68.20 35.35 33.92 23.94 18.28 22.05 39.14 31.43 18.51 21.03 5.50 6.96 5.19 28.66 26.29 13.89 25.87 9.84 26.88 16.81 38.65 19.23 21.82 31.58 30.13 42.42 16.51 21.16 32.97 9.84 10.64 29.56 40.69 12.86 13.80 Class Frequency F( F( xm 5-14 10 9.5 95 902.5 15-24 11 19.5 214.5 380.25 4182.75 25-34 11 29.5 324.5 870.25 9572.75 35-44 5 39.5 197.5 1560.25 7801.25 45-54 49.5 2450.25 55-64 2 59.5 119 3540.25 7080.5 66-74 1 69.5 69.5 4830.25 4830.25 Total 40 1020 13721.75 34370
Q9. The following table shows the marks of 40 students in chemistry mock exam, their teacher wants to prepare a frequency distribution table using seven classes, further the teacher wants to know the average mark for this group & the standard deviation. 13.26 32.43 18.10 58.23 64.00 68.20 35.35 33.92 23.94 18.28 22.05 39.14 31.43 18.51 21.03 5.50 6.96 5.19 28.66 26.29 13.89 25.87 9.84 26.88 16.81 38.65 19.23 21.82 31.58 30.13 42.42 16.51 21.16 32.97 9.84 10.64 29.56 40.69 12.86 13.80 Class Frequency F( F( xm 5-14 10 9.5 95 902.5 15-24 11 19.5 214.5 380.25 4182.75 25-34 11 29.5 324.5 870.25 9572.75 35-44 5 39.5 197.5 1560.25 7801.25 45-54 49.5 2450.25 55-64 2 59.5 119 3540.25 7080.5 66-74 1 69.5 69.5 4830.25 4830.25 Total 40 1020 13721.75 34370
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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Transcribed Image Text:Q9. The following table shows the marks of 40 students in chemistry mock exam, their teacher wants to
prepare a frequency distribution table using seven classes, further the teacher wants to know the average
mark for this group & the standard deviation.
13.26
32.43
18.10
58.23
64.00
68.20
35.35
33.92
23.94
18.28
22.05
39.14
31.43
18.51
21.03
5.50
6.96
5.19
28.66
26.29
13.89
25.87
9.84
26.88
16.81
38.65
19.23
21.82
31.58
30.13
42.42
16.51
21.16
32.97
9.84
10.64
29.56
40.69
12.86
13.80
Class
Frequency
F(
F(
xm
5-14
10
9.5
95
902.5
15-24
11
19.5
214.5
380.25
4182.75
25-34
11
29.5
324.5
870.25
9572.75
35-44
39.5
197.5
1560.25
7801.25
45-54
49.5
2450.25
55-64
59.5
119
3540.25
7080.5
66-74
1
69.5
69.5
4830.25
4830.25
Total
40
1020
13721.75
34370
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