4 - Statistical Quality Control in Mix Design
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Practice Questions
Test your understanding with targeted questions
Define standard deviation in your own words.
💡 Hint: Think about how spread out the numbers are.
What does a higher coefficient of variation indicate?
💡 Hint: It’s a ratio comparing standard deviation to mean.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does standard deviation measure?
💡 Hint: Think about how closely your results cluster around the average.
True or False: A higher coefficient of variation indicates lower variability.
💡 Hint: Recall what CV represents.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given the following data: 15, 22, 19, 21, and 25 MPa, calculate the standard deviation and interpret the results in the context of concrete quality.
💡 Hint: Remember to calculate the mean first and then use the standard deviation formula.
If a control chart is showing consistent readings above the UCL for several consecutive days, what actions should be taken, and why?
💡 Hint: Focus on the consequences of unregulated strength deviations.
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