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Q.

The following table shows the cumulative frequency distribution of marks of 800 students in an examination:


Question Image

Construct a frequency distribution table for the data above to find the frequency of class 80-90.


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a

40

b

80

c

100

d

140 

answer is A.

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Detailed Solution

Given is a table,
Question ImageThe frequency distribution table for data above for the given data is as follows:
Question ImageThus, from the table, the frequency of class 80-90 is 40.
Therefore, option (1) is correct.
 
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