MAT 510 Final Exam (3 Set, 100% Score) NEW

06 Jun MAT 510 Final Exam (3 Set, 100% Score) NEW

Question 1

           

            Improvement is needed for an organization to survive because:

                                   

 Question 2

           

            The Statistical Thinking Strategy has significant commonality with the scientific method. Which of the following statistical thinking principles is NOT generally associated with the scientific method?

                                   

 Question 3

           

            Viewing a business as a system is important because:

                                   

 Question 4

           

            Improving the quality of process measurements is:

                                   

 Question 5

           

            Suppose the Problem Solving Framework were used to attack a problem where the process in question was inherently stable. Which of the following would be a likely result of this effort?

                                   

 Question 6

           

            The histogram below showing ages of credit card holders displays what type of distribution?

 

           

 Question 7

           

            A main purpose of a control chart is to:

                                   

 Question 8

           

            The histogram has which of the following limitations?

                                   

           

                                   

 Question 9

           

            Non-random and unpredictable patterns on a control chart indicate:

                                   

 Question 10

           

            A comparison between the Cp and Cpk for a process would find which of the following to be true?

                                   

 Question 11

           

            A statistic that is used to indicate too much correlation between the predictors in a regression analysis is called the:

                                   

 Question 12

           

            An Adjusted R-square value is a correlation coefficient that has been modified to account for:

                                   

 Question 13

           

            Tips for building useful models include:

                                   

 Question 14

           

            The model residuals are examined to:

                                   

 Question 15

           

            Results of regression analysis are often abused in the following ways:

                                   

 Question 16   

            The basic reason for randomness of sampling in design of experiments is:

 

Question 17

           

            In every experiment there is experimental error.  Which of the following statements is true?

                                   

 Question 18

           

            An aspect of good experimental strategy is to study the effects of the variables  

(Xs) over a wide range. This strategy increases the chances that effects will be found because:

                                   

 Question 19

           

            This technique is used to eliminate the effects of nuisance factors (e.g., machines, day of week, and season of year) from an experiment.

                                   

 Question 20

           

            A 32 experiment means that we are experimenting with:

                                   

 Question 21

           

            We ran a taste-test to see which soft drink employees in our company prefer. We had 100 employees, selected as randomly as possible, taste test two brands and determine which they preferred. Which of the following would be a reasonable statistical analysis to determine if there is a clear preference among our employees?

                                   

 Question 22

           

            We are testing the null hypothesis that the average monthly revenue between four insurance offices is the same. We obtained a p-value of .07. Which of the following would be an appropriate conclusion about the population?

                                   

 Question 23

           

            For which of the following scenarios am I most likely to utilize a Chi-squared test?

                                   

 Question 24

           

            Which of the following could be considered a prediction interval?  

           

                                   

 Question 25

           

            I have made a mistake in copying data into my computer to perform a large regression model with 20 independent variables. Basically, I ended up with random data in each of the columns. However, I accidentally ran the regression anyway. Making reasonable assumptions, which of the following outcomes is most likely?

 

 

 

 

MAT 510 Final Exam Set 2

 

                                   

•           Question 1

           

            In every experiment there is experimental error.  Which of the following statements is true?

                                   

•           Question 2

           

            This technique is used to eliminate the effects of nuisance factors (e.g., machines, day of week, and season of year) from an experiment.

                                   

•           Question 3

           

            An aspect of good experimental strategy is to study the effects of the variables  

(Xs) over a wide range. This strategy increases the chances that effects will be found because:

                                   

•           Question 4

 

            A 32 experiment means that we are experimenting with:

                                   

•           Question 5

           

            Given the plot below, what might you suspect about factors A and B?

 

                       

•           Question 6

           

            Which type of variation was critical to resolving the realized revenue case study?

                                   

•           Question 7

           

            Figure 2.15 displays a model of the statistics discipline, showing the relationship between statistical thinking, statistical engineering, and statistical methods and tools. Which of the following is a principle illustrated by this model?

                                   

•           Question 8

           

            The model residuals are examined to:

                                   

•           Question 9

           

            A statistic that is used to indicate too much correlation between the predictors in a regression analysis is called the:

                                   

•           Question 10

           

            The best way to evaluate the validity of a statistical model is:

                                   

•           Question 11

           

            George Box tells us “all models are wrong but some are useful”. By this comment he means:

                                   

•           Question 12

           

            Models based on subject matter fundamentals (theory) are generally better than statistical models for:

                       

           

                                   

•           Question 13

           

            We are testing the null hypothesis that the average monthly revenue between four insurance offices is the same. We obtained a p-value of .07. Which of the following would be an appropriate conclusion about the population?

                                   

•           Question 14

           

            I have calculated an interval to document the uncertainty in my estimate of the long-term standard deviation I will experience in time to pay invoices in my business going forward. Baaed on this information, this should be considered what type of interval?

 

•           Question 15

 

            After running an ANOVA comparing the average years of experience between five different job classifications, we obtained a p value of .02. Which of the following would be a reasonable conclusion concerning the population in this case?

                                   

•           Question 16

           

            For which of the following scenarios am I most likely to utilize a Chi-squared test?

                                   

•           Question 17

           

            Which of the following could be considered a prediction interval?

                                   

•           Question 18

           

            Improvement is needed for an organization to survive because: