1. Using the grouped data below, answer the following correctly and make an analysis. Scores of 50 students in a 75-item Mathematics exam. f of (<) Xm Scores LB fXm 22-29 11 30-37 15 38-45 9 46-53 6 54-61 5 62-69 70-77 1 (Xm-X) (Xm-X) (Xm-X) (Xm-X) b) Standard deviation Σ(Xm-x)² Sm n-1 2 Total 50 (Cont.) Scores 22-29 11 30-37 15 38-45 9 46-53 6 54-61 5 62-69 2 70-77 2 Total 50 b) Meani 2 7-ΣfXm 21 e) Median 2- sk. &=LB+i f) Coefficient of Skewness Skewness (Approximation formula) 3(X-X) 3( LB= () +(--) Xm-X (Xm-X)² f(Xm-x)² + e) Coefficient of (Accurate formula) nΣf(x-x)' (n-1)(n-2)s ( (-1)(-2)( sk=-
1. Using the grouped data below, answer the following correctly and make an analysis. Scores of 50 students in a 75-item Mathematics exam. f of (<) Xm Scores LB fXm 22-29 11 30-37 15 38-45 9 46-53 6 54-61 5 62-69 70-77 1 (Xm-X) (Xm-X) (Xm-X) (Xm-X) b) Standard deviation Σ(Xm-x)² Sm n-1 2 Total 50 (Cont.) Scores 22-29 11 30-37 15 38-45 9 46-53 6 54-61 5 62-69 2 70-77 2 Total 50 b) Meani 2 7-ΣfXm 21 e) Median 2- sk. &=LB+i f) Coefficient of Skewness Skewness (Approximation formula) 3(X-X) 3( LB= () +(--) Xm-X (Xm-X)² f(Xm-x)² + e) Coefficient of (Accurate formula) nΣf(x-x)' (n-1)(n-2)s ( (-1)(-2)( sk=-
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:Apple App Store.
• Submit your accomplished activities on or before MAY 23, 2022, Monday UNTIL 6:00 PM.
Strictly follow the deadline.
ACTIVITY
Directions: Do as indicated. Show your complete solutions and avoid the
unnecessary erasure in the final answers.
1. Using the grouped data below, answer the following correctly and
make an analysis.
Scores of 50 students in a 75-item Mathematics exam
cf (<) Xm
f Xm
Scores
LB
f
22-29
11
30-37
15
38-45
9
46-53
6
54-61
5
62-69
2
70-77
2
Total 50
(Cont.)
Scores f (Xm-x)³¹ f(Xm-x) (Xm-x) f(Xm-X)
22-29
11
30-37 15
38-45
9
46-53
6
54-61
5
62-69
2
70-77
2
Total
50
b) Standard deviation
Σf(Xm-x)²
S=1
n-1
b) Mean
7=
fXm
21
n
S=
S=
e) Median
2/2=
sk=
LB=
-cf
(-)
= LB+i
f) Coefficient of Skewness
Skewness
(Approximation formula)
3(X-X)
3(
Xm-X (Xm-X) f(Xm-X)²
=
i=
+
+ ( J
e) Coefficient of
sk=
(Accurate formula).
nΣf(x-x)'
(n-1)(n-2)s
(
(-1)(-2)(
)
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