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1. Draw a histogram and a frequency polygon for the following data:
Class: 0-10 10-20 20-30 30-40 40-50 50-60 60-70
Frequency: 6 8 10 15 13 8 5
2. Represent the data given below with a suitable diagram.
Items
Value in Rs. in1997-98
Value in Rs. in 1998-99
Raw material
150
200
Labour
100
Power
75
Advertisemen t
25
Other charges
50
Total cost of manufacturing
400
900
A city official has stated that 20% of the items sold by pawn shops within the city have been stolen. Ralph has just purchased 4 items from one of the city's pawn shops.
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A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender.
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