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Dear Student,

G i v e n c o e f f i c i e n t o f v a r i a t i o n 1 = 50 C o e f f i c i e n t o f v a r i a t i o n 2 = 60 A r i t h m e t i c m e a n 1 = 30 A r i t h m e t i c m e a n 2 = 25 C V_{1} = \frac{σ_{1}}{x_{1}} \times 100 = > 50 = \frac{σ_{1}}{30} \times 100 σ_{1} = \frac{50 \times 30}{100} = 15 C V_{2} = \frac{σ_{2}}{x_{2}} \times 100 60 = \frac{σ_{2}}{25} \times 100 σ_{2} = 15 . D i f f e r e n c e b e t w e e e n s t a t n d a r d d a v i a t i o n i s = σ_{2} - σ_{1} = 0 .

Regards