From the given cumulative frequency find frequency of class mark 20-30
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the class mark is 25
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Cumulative Frequency Table (Ungrouped data)
The following table gives the frequency distribution of marks obtained by 28 students in a particular test.
Marks
30
31
32
33
Frequency
5
7
10
6
Construct a cumulative frequency table for the given data.
Solution:
Marks
Frequency
Marks less than
Cumulative Frequency
30
5
30
5
31
7
31
5 + 7 =12
32
10
32
12 + 10 =22
33
6
33
22 + 6 =28
Statistics - How to make a cumulative frequency chart (Ungrouped data)
This example shows how to make a cumulative frequency chart. Remember that in these charts, we simply want to keep track of the grand total of the data.
The following table gives the frequency distribution of marks obtained by 28 students in a particular test.
Marks
30
31
32
33
Frequency
5
7
10
6
Construct a cumulative frequency table for the given data.
Solution:
Marks
Frequency
Marks less than
Cumulative Frequency
30
5
30
5
31
7
31
5 + 7 =12
32
10
32
12 + 10 =22
33
6
33
22 + 6 =28
Statistics - How to make a cumulative frequency chart (Ungrouped data)
This example shows how to make a cumulative frequency chart. Remember that in these charts, we simply want to keep track of the grand total of the data.
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