Mastering Statistical Methods for Quality Control in Engineering
School
Georgia Southern University**We aren't endorsed by this school
Course
MATH 1113
Subject
Industrial Engineering
Date
Dec 11, 2024
Pages
2
Uploaded by DrHornet4721
Statistical Methods for Quality Control in Engineering DesignMultiple-Choice Questions1.What is the purpose of hypothesis testing in quality control?–A) To estimate population parameters.–B) To determine if there is enough evidence to reject a null hypothesis.–C) To calculate sample means.–D) To visualize data distributions.2.Which control chart is most appropriate for monitoring the proportion of defective items in a sample?–A) X-bar chart–B) R chart–C) p-chart–D) C-chart3.In regression analysis, what does the coefficient of determination (R²) indicate?–A) The strength of the relationship between the independent and dependent variables.–B) The average value of the dependent variable.–C) The slope of the regression line.–D) The sample size used in the analysis.4.What is a key feature of a control chart?–A) It shows the average variable over time.–B) It identifies the root cause of defects.–C) It displays limits that indicate when a process is out of control.–D) It calculates the total cost of quality.5.Which of the following is a common assumption in regression analysis?–A) The dependent variable does not have a normal distribution.–B) The relationship between variables is linear.–C) The independent variables are highly correlated.–D) All residuals are positive.6.What does a Type I error in hypothesis testing refer to?–A) Rejecting a true null hypothesis.–B) Failing to reject a false null hypothesis.–C) Accepting the alternative hypothesis.–D) Miscalculating the sample size.7.In quality control, what does a process capability index (Cpk) measure?–A) The average defect rate of a process.–B) The ratio of the specification range to the process variation.–C) The total number of samples taken during production.–D) The time taken to produce a product.8.Which statistical test is commonly used to compare the means of two independent samples?
–A) Chi-square test–B) ANOVA–C) t-test–D) Z-test9.What is the main purpose of using a scatter plot in regression analysis?–A) To calculate averages.–B) To visualize the relationship between two variables.–C) To determine the sample size needed.–D) To identify outliers.10.Which of the following is true about control limits in a control chart?–A) They are always equal to the process average.–B) They are calculated based on the standard deviation of a process.–C) They should never exceed the specification limits.–D) They are determined by the sample size alone.Answers:1.B2.C3.A4.C5.B6.A7.B8.C9.B10.B