the marks obtained by 25 students in a test (out of 50 marks)are as below.30,35,27,41,22,30,12,8,01,15,18,12,21,32,44,27,28,16,24,32,28,41,32,30,25 prepare a frequency distribution table for the above data.
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Given: Data in the form of marks obtained by 25 students.
To solve: Prepare a frequency distribution table for given data.
Solution: The marks obtained by the given students are 30,35,27,41,22,30,12,8,01,15,18,12,21,32,44,27,28,16,24,32,28,41,32,30 and 25.
The frequency of a given data point represents how many times it occurs in the data.
The cumulative frequency is found by adding the frequency of the previous data point to the frequency of the current data item. It is the same as the frequency for the first data point.
Based on the above data, the frequency table can be made with 3 columns consisting of the element, its frequency and its cumulative frequency.
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