Social & Preventive Medicine Biostats 502cc028 The mean of the 25 patients' plasma volumes is 12.5 litres. Standard detion is 0.25. Calculate standard error A 0.05 B 0.5 C 0.01 D 0.1 High-Yield Explanation S.E = S/[?]n S = Standard detion = 0.25 n = sample size = 25 S.E. = 0.25/[?] 25 = 0.25/5 = 0.05