Dispersion of data is measured by -a) Coefficient of correlationb) Rangec) Standard deviationd) Coefficient of variatione) Normal distribution curve
Measure of dispersion (Variation)

Absolute: Range, Quartile deviation, Mean deviation, standard deviation.
Relative: Co-efficient of range, co-efficient of quartile deviation, coefficient of mean deviation, co-efficient of variation.
a
c
ac
bcd