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Question

Weekly wages of 250 workers in a factory are given in the following table. Construct the histogram and frequency polygon on the same graph for the data given.
Weekly wages500550550600600650650700700750750800
No of workers304250554528

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Solution


ClassintervalFrequency Classmark
4505000 475
50055030 525
55060042 575
60065050 625
65070055 675
70075045 725
75080028 775
8008500 825
Co-ordinates of frequency polygon are (475,0),(525,30),(575,42),(625,50),(675,55),(725,45),(775,28) and (825,0).
Above graph shows histogram and frequency of polygon.

1118029_564920_ans_de44fe1d39524650af45113910b73006.jpeg

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