Question

If the mean of 2, 9, x+6, 2x+3, 5, 10, 5 is 7, then the value of x is :

The mean of the following distribution is

Assertion (A): The arithmetic mean of the following given frequency distribution table is 13.81. Reason (R): Mean = ∑fx / ∑f

Assertion (A): The algebraic sum of the deviations of a frequency distribution from its mean is 0 Reason (R): Mode of a frequency distribution cannot be determined graphically.