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

In any discrete series (when all values are not same),the relationship between $M.D.$ about mean and $S.D.$ is:

If $\text{Mean} = x(3 \times \text{Median} - \text{Mode})$,then what is the value of $x$?

For a normal distribution,which of the following relations holds true?

In a frequency distribution,if the mean and median are $21$ and $22$ respectively,then what is the approximate mode?

Determine which of the following statements is true: $(1)$ The mode can be calculated using a histogram. $(2)$ The median is not independent of the change of scale. $(3)$ Variance is independent of the change of origin and scale.