Discussion :: Concrete Technology - Section 4 (Q.No.39)
If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is
Answer: Option B
No answer description available for this question.
|Civil said: (Dec 11, 2013)|
|Co-efficient of variation:
500/4000 = .125*100 = 12.5.
|Ruhi Varshney said: (Jan 26, 2016)|
|Coefficient of variation = Standard deviation/Average strength.|
|Samm said: (Nov 8, 2016)|
|ft = fck + kS where k = 1.65 and S = standard deviation . And as per the question 4000 kg/cm2 is equal to M400 conc that is not usually possible it should be 400 kg/cm2 and so does in case of standard deviation it should be 50 instead of 500 so the variation should be 1.25 * 500/4000 = 15.625%.|
|Sukan said: (Dec 12, 2016)|
|Coefficient of Variance is the percentage ratio of standard deviation to the mean.
Hence 12.5% is the answer.
|Dhanu said: (Sep 8, 2017)|
|Co-eff of variation = (std deviation / avg strength )*100.
500/4000 = 0.125 *100 = 12.5 %.
source : M.S shetty.
|Priya said: (Nov 9, 2017)|
|Coefficient of variation = standard/mean*10.|
Post your comments here:
Email : (optional)
» Your comments will be displayed only after manual approval.