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Questions and Answers
How many standard cubes are typically used to test the compressive strength of concrete?
What statistical parameter is used to measure the variability of concrete strength?
What is the main factor affecting the quality of concrete?
What does systematic inspection at the construction site ensure?
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When are the remaining three standard cubes used to test concrete strength?
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What does the normal distribution curve represent when plotting the compressive strength test results of concrete cubes?
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What is the purpose of controlling the quality of concrete using statistical means?
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How is the variability of concrete strength affected by the quality of materials and method of batching?
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What does the arithmetic mean provide an indication of for a set of test results?
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What property of the normal distribution curve helps in determining the variation from the mean strength?
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