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25 students of a class obtained following respective marks out of 100 marks in subject Science:16, 25, 30, 18, 45, 56, 87, 93, 75, 57, 65, 89, 76, 82, 34, 53, 21, 28, 91, 47, 54, 33, 78, 45, 72Grouped frequency distribution table of above will be:(A)S. No.ClassFrequency10-202220-406340-607460-805580-1005(B)S. No.ClassFrequency10-202220-405340-607460-805580-1006(C)S. No.ClassFrequency10-202220-406340-608460-805580-1004(D) S. No.ClassFrequency10-203220-406340-607460-805580-10041. C2. D3. A4. B |
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Answer» Correct Answer - Option 3 : A Concept used: In statistics, a frequency distribution is a list, table or graph that displays the frequency of various outcomes in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval Calculation: The number of students obtained less than 20 marks = 2 i.e (16, 18) The number of students who obtained marks between 20 and 40 = 6 i.e (25, 30, 34, 21, 28, 33) The number of students who obtained marks between 40 and 60 = 7 i.e (45, 56, 53,57, 47, 54, 45) The number of students who obtained marks between 60 and 80 = 5 i.e (75, 65, 76, 78, 72) The number of students who obtained marks between 80 and 100 = 5 i.e (87, 89, 82, 93, 91) ∴ The correct answer is
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