
Statistical Process Control
Quiz by Nhat-Luong Nhieu
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15 questions
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- Q1What is the primary goal of Statistical Process Control?To maintain and improve process qualityTo increase production speedTo reduce costs in productionTo maximize profits30s
- Q2What is the purpose of a control chart in Statistical Process Control?To monitor and control the stability of a processTo calculate process capabilityTo estimate the standard deviation of a processTo identify outliers in data30s
- Q3Which control chart is used to monitor the mean of a process?X-bar chartP chartC chartR chart30s
- Q4What is a common statistical tool used in Statistical Process Control?Control chartScatter plotRegression analysisHistogram30s
- Q5Which of the following is NOT a commonly used control chart in Statistical Process Control?X-bar chartScatter plotR chartP chart30s
- Q6What is a process mean in Statistical Process Control?The range of values in a process outputThe average value of a process outputThe highest value of a process outputThe lowest value of a process output30s
- Q7In a Range chart, what does the range represent?The difference between the highest and lowest valuesThe standard deviation of the dataThe mean of the dataThe median of the data30s
- Q8What is the formula for calculating the range in a Range chart?Range = Mode + VarianceRange = Median + Interquartile rangeRange = Maximum value - Minimum valueRange = Mean + Standard deviation30s
- Q9What is natural variation in statistical process control?Inspection of a processIntentional changes in a processInherent variability within a processControl limits of a process30s
- Q10What is assignable variation in statistical process control?Special causes of variation that can be identified and eliminatedThe variation that cannot be controlledThe average value of a processThe natural variation that occurs in all processes30s
- Q11What is the formula to calculate the control limits in a p-chart?UCL = p̄ + 3√(p̄(1-p̄)/n), LCL = p̄ - 3√(p̄(1-p̄)/n)UCL = p̄ + 2√(p̄(1-p̄)/n), LCL = p̄ - 2√(p̄(1-p̄)/n)UCL = p̄ + 4√(p̄(1-p̄)/n), LCL = p̄ - 4√(p̄(1-p̄)/n)UCL = p̄ + √(p̄(1-p̄)/n), LCL = p̄ - √(p̄(1-p̄)/n)30s
- Q12What is the purpose of the control limits in a p-chart?To determine if the process is statistically in control or out of controlTo set the target value for the processTo identify the potential causes of variationTo calculate the mean and standard deviation of the process30s
- Q13What is the main purpose of a c-chart in statistical process control?To monitor the count of defects in a processTo monitor the variance of a processTo monitor the range of a processTo monitor the mean of a process30s
- Q14Which type of chart is used to monitor the proportion of defective items in a process?x-chartp-chartu-chartc-chart30s
- Q15Which type of chart is used to monitor the count of defects in a process?u-chartp-chartx-chartc-chart30s