Let x₁, x₂, x₃ ....... x_n are n observations with mean $\overline{\mathrm{x}}$ and standard deviation $\mathrm{\sigma }$. Match the items of List I with those of List II

	List-I		List-II
a)	$\sum _{\mathrm{i}=1}^{\mathrm{n}} \left({\mathrm{x}}_1-\overline{\mathrm{x}}\right)$	i)	Median
b)	variance ($\mathrm{\sigma }$2)	ii)	Coefficient of variation
c)	Mean deviation	iii)	zero
d)	Measure used to find homogenity of given two series	iv)	Mean of the absolute deviations from any measure of central tendency
		v)	Mean of squares of the deviation from mean

	a	b	c	d
1)	i	v	ii	iii
2)	i	iv	ii	i
3)	iii	v	iv	ii
4)	iii	v	b	i