The mean of the 25 plasma volumes is 12.5 litres. Standard detion is 0.25. Calculate Variance:-: (A) 0.0625, (B) 0.625, (C) 6.25, (D) 625
Answer is A. - Standard detion = square root of variance Variance = (S.D X S.D) - Given SD = 0.25 - Thus, Variance = 0.25 x 0.25 = 0.0625