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Construct a continuous series frequency distribution table using the data given below:
 
Class
30 -40
45 -55
60 -70
75 -85
90 -100
Frequency
6
8
7
14
4
  
The continuous frequency table will look like:
  
Class
Frequency
 -
6
 -
8
 -
7
 -
14
 -
4