19. The standard deviation of the set {10, 10, 10, 10, 10} is RRB NTPC (Phase 1) 2016 (1) 0 (2) 1 (3) 5 (4) 10

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eiven 10,10,10,10,10 ( sin a n=10 ) given monbees - mean ( =10-10=0 ) ( 10-10=0 ) ( 10-10=0 ) ( 10 cdot 10=0 ) ( 10-10=0 ) Standard deviafion ( =sqrt{text { jinen numbers - moan }} ) h ( =C )

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