Standard Deviation Calculation

Standared deviation for Cube Strength

Standard deviation for every grade of concrete shall be calculate separately. Because the value of standard deviation various based on the material used and batch mix. Based on the number of trials and based on the Indian standards. Calculation sheet some fillup data as Grade of mix design, no. of Cube strength sat, Indiviusal cube strength, Find out standared deviation & Coefficient of variation etc
 

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It is procted file. Can you please share password ? i have to prepared it for my current project. it is required to change FCK valuse as M30 grade is used in my project.