Good day, this problem is already reposted. Pls answer question 4 this time. Since it is related to question 1, the answer for it is also provided below. Tysm. ** A random sample was taken of the thickness of insulation in transformer windings, and the following thicknesses in millimeters were recorded: 1. a) Make a frequency table for these data starting at lowest lower class limit of 20 and with a class width/ class size of 7.  b) Determine the class marks, class boundaries, relative frequency, CF. Note: You can use EXCEL.   ✓✓ 4. From question 1: Using the frequency distribution, describe the shape in terms of its skewness and kurtosis (calculate/compute SK and K).

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Good day, this problem is already reposted. Pls answer question 4 this time. Since it is related to question 1, the answer for it is also provided below. Tysm.

**

A random sample was taken of the thickness of insulation in transformer windings, and the following thicknesses in millimeters were recorded:


1. a) Make a frequency table for these data starting at lowest lower class limit of 20 and with a class width/ class size of 7.

 b) Determine the class marks, class boundaries, relative frequency, <CF, and >CF.
Note: You can use EXCEL.

 

✓✓ 4. From question 1: Using the frequency distribution, describe the shape in terms of its skewness and kurtosis (calculate/compute SK and K).

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Transcribed Image Text:28 21 22 29 31 37 38 41 39 44 48 54 56 56 57 47 38 35 98 36 29 37 32 42 43 40 48 36 37 37 36 38 40 41 44 39 38 34 24 32 39 44 42 30 37 30 42 37 34 37 32 24 42 36 49 39 23 34 36 40 24 35 45 47 33 25 30 22 56 36 38 40 55 60 24 44 38 29 52 50 33 35 41 48 52 21 40 29 40 59 46 39 28 25 49 34 48 55 58 62 25
b. The class marks, class boundaries, relative frequency, >CF and <CF are given in the table below:
1. a) Lowest class limit = 20 Class size =7
Classes
Frequency Clas marks Class boundaries
Relative frequency
<CF
>CF
The frequency distribution table for the data is,
20-26
12
23
19.5-26.5
0.12
12
100
Classes
Frequency
27-33
15
30
26.5-33,5
0.15
27
88
20-26
12
34-40
37
37
33.5-40.5
0.37
64
73
27-33
15
41-47
16
44
40.5-47.5
0.16
80
36
34-40
37
48-54
10
51
47.5-54.5
0.1
90
20
55-61
9
58
54.5-61.5
0.09
99
10
41-47
16
62-68
65
62.5-67.5
Ι0.01
100
48-54
10
Sum= 100
55-61
The Class marks can be calculated by using the formula:
62-68
1
Class marks = wer lim agper lim
The relative frequency can be calculated by using the formula,
Subermg frrguency
Tatul frepemcy
Relative Frequency =
Transcribed Image Text:b. The class marks, class boundaries, relative frequency, >CF and <CF are given in the table below: 1. a) Lowest class limit = 20 Class size =7 Classes Frequency Clas marks Class boundaries Relative frequency <CF >CF The frequency distribution table for the data is, 20-26 12 23 19.5-26.5 0.12 12 100 Classes Frequency 27-33 15 30 26.5-33,5 0.15 27 88 20-26 12 34-40 37 37 33.5-40.5 0.37 64 73 27-33 15 41-47 16 44 40.5-47.5 0.16 80 36 34-40 37 48-54 10 51 47.5-54.5 0.1 90 20 55-61 9 58 54.5-61.5 0.09 99 10 41-47 16 62-68 65 62.5-67.5 Ι0.01 100 48-54 10 Sum= 100 55-61 The Class marks can be calculated by using the formula: 62-68 1 Class marks = wer lim agper lim The relative frequency can be calculated by using the formula, Subermg frrguency Tatul frepemcy Relative Frequency =
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