Mathematics · JEE | STATISTICS

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In a grouped frequency distribution, the exact value of each observation is lost during frequency grouping. Reason (R): The formula for finding the mean of grouped data uses the class mark as the representative value for each observation in that class interval. In the light of the above statements, choose the correct answer from the options given below:

1. A
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B
   Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. C
   (A) is true but (R) is false.
4. D
   (A) is false but (R) is true.