Construct a frequency table with equal class intervals from the following data on the monthly wages (in rupees) of 28 labourers 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, 318, 306, 292, 254, 278, 210, 240, 280, 316, 306, 215, 256, 236
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A frequency table with equal class intervals from the following data on the monthly wages (in rupees) of 28 labourers working in a factory, taking one of the class intervals as 210-230 (230 not included) is in the attachment below.
Extra information :
The number of entries of the data having their values lying in a class is defined as a frequency of the class.
The table in which the corresponding frequencies are written against each class is called a frequency distribution of given data.
Grouped frequency distribution are of two types :
Exclusive form (continuous form) : A frequency distribution in which upper limit of each class is excluded and lower limit is included, is called an exclusive form.
Inclusive form (Discontinuous form) : A frequency distribution in which each upper limit as well as lower limit are included, is called an inclusive form.
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