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Heuristic method-1
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Row minima method
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Standard deviation and coefficient of variation for grouped data calculator
Find Standard Deviation and Coefficient of Variation for grouped data
Type your data in either horizontal or verical format,
for seperator you can use '-' or ',' or ';' or space or tab
for sample click random button
OR
X & Frequency
Class & Frequency
Rows :
Click On Generate
Class
2 - 4
4 - 6
6 - 8
8 - 10
Frequency
3
4
2
1
Class
20 - 25
25 - 30
30 - 35
35 - 40
40 - 45
45 - 50
Frequency
110
170
80
45
40
35
Class
10 - 20
20 - 30
30 - 40
40 - 50
50 - 60
60 - 70
70 - 80
Frequency
15
25
20
12
8
5
3
X
0
1
2
3
4
Frequency
1
5
10
6
3
X
10
11
12
13
14
Frequency
3
12
18
12
3
X
1.75
1.72
1.73
1.76
1.71
1.80
1.87
2.34
Frequency
3
2
4
5
6
2
7
1
X
0
1
2
3
4
Frequency
27
9
7
5
2
X
0
1
2
3
4
Frequency
17
9
6
5
3
Class
-40 - -30
-30 - -20
-20 - -10
-10 - 0
0 - 10
10 - 20
20 - 30
30 - 40
Frequency
7
10
10
20
57
23
13
10
Class
0 - 2
2 - 4
4 - 6
6 - 8
8 - 10
10 - 12
Frequency
5
16
13
7
5
4
Class
0 - 2
2 - 4
4 - 6
6 - 8
8 - 10
10 - 12
Frequency
2
7
12
19
9
1
Class
15 - 20
20 - 25
25 - 30
30 - 35
35 - 40
40 - 45
45 - 50
50 - 55
55 - 60
Frequency
3
9
14
20
35
9
6
2
2
Solution
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Solution
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