In a given frequency distribution,the respective values of mean and median are $21$ and $22$. The value of mode is

The mode of the following frequency distribution is:

Class	$0-5$	$5-10$	$10-15$	$15-20$	$20-25$	$25-30$
Frequency $(f_i)$	$3$	$4$	$7$	$11$	$2$	$5$

If for a slightly asymmetric distribution,mean and median are $5$ and $6$ respectively,what is its mode?

Consider the following frequency distribution:

Class	$0-6$	$6-12$	$12-18$	$18-24$	$24-30$
Frequency	$a$	$b$	$12$	$9$	$5$

If $\text{mean} = \frac{309}{22}$ and $\text{median} = 14$,then the value of $(a-b)^{2}$ is equal to $.....$

If $\text{mean} = (3 \text{median} - \text{mode}) k$,then the value of $k$ is

If each term of a distribution is increased by $2$,what will happen to the median and the standard deviation of the distribution?