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Each question consists of two statement ...

Each question consists of two statement ,namely, Assertion (A) and Reason ( R ) For selecting the correct answer use the following code :

The correct answer is : (a) / (b) /( c) /(d)

A

Both Assertion (A) and Reson ( R) are true and Reason (R ) is a correct explanation of Assertion (A).

B

Both Assertion (A) and Reason ( R ) are ture but Reason ( R) is not a correct explanation of Assertion (A) .

C

Assertion (A) is true and Reason ( R) is false.

D

Assertion (A) is fasle and Reason ( R) is true

Text Solution

Verified by Experts

Reason ( R) is clearly true
The maximum frequency is 23 and the modal class is 12-15
`therefore x_k=12, f_k=23, f_(k-1)=21, f_(k+1)=10 and h=3 `
`therefore " mode" ={12+3xx((23-21))/((2xx23-21-10))}=(12+3xx2/(15))=12.4`
`therefore` Asseration (A) is true
Hence , the correct answer is (b)
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