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Organisation of Data — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsOrganisation of Data3 Marks
Question
Construct a frequency distribution with a class interval of 4 on exclusive basis for the following data:
91, 94, 111, 121, 95, 103, 99, 110, 100, 101, 92, 105, 110, 111, 93, 96, 98, 106, 94, 115.
✓

Answer

Array: 91, 92, 93, 94, 94, 95, 96, 98, 99, 100, 101, 103,105, 106, 110, 110, 111, 111, 115, 121 The lowest value is 91 and the highest is 121. We have to take class interval of 4. The classes will be 90 - 94, 94-98 and so on.
C.I.
Tally Bars
Frequency
90-94
///
3
94-98
////
4
98-102
////
4
102-106
//
2
110-114
////
4
114-118
/
1
118-122
/
1
 
 
$\Sigma\text{f}=20$

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