Match List - I with List - II

List - I	List - II
(A) Coefficient of Dispersion	(I) Standard deviation as a percentage of mean
(B) Standard Deviation	(II) Mean of squared deviations of individual scores from mean
(C) Coefficient of Variation	(III) Variance in terms of mean
(D) Variance	(IV) Positive square root of variance

Correct option is C

(A) Coefficient of Dispersion → (III) Variance in terms of mean 
The coefficient of dispersion is a relative measure of variability, expressing variance in terms of the mean rather than absolute values.
Formula: Coefficient of Dispersion=varance/mean

(B) Standard Deviation → (IV) Positive square root of variance 
Standard deviation (SD) measures the dispersion of data around the mean.
It is the square root of variance:

(C) Coefficient of Variation → (I) Standard deviation as a percentage of mean 
The coefficient of variation (CV) expresses the standard deviation as a percentage of the mean, allowing comparison across datasets.
Formula: 

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(D) Variance → (II) Mean of squared deviations of individual scores from mean 
Variance measures the spread of data points around the mean, calculated as the mean of squared deviations:

Thus, the correct answer is Option (3): (A)-(III), (B)-(IV), (C)-(I), (D)-(II).