Question
Construct a frequency table with equal class intervals from the following data on the monthly wages (in rupees) of 28 laborers working in a factory, taking one of the class intervals as 210-230 (230 not included).
220, 268, 258, 242, 210, 268, 272, 242, 311, 290, 300, 320, 319, 304, 302, 218, 306, 292, 254, 278, 210, 240, 280, 316, 306, 215, 256, 236.

Answer

Monthly Wages (in rupees)
Tally marks
Frequency
210-230
||||
4
230-250
||||
4
250-270
||||
5
270-290
|||
3
290-310
|||| ||
7
310.0-330.0
||||
5
 
 
Total = 28

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