Category: Certification Exams Questions

OPTIONS Z distribution F distribution Chi-Square distribution None of the above ANSWER Chi-Square distribution EXPLANATION Kruskal wallis test uses the Chi-Square distribution in calculating test statistic, so Chi-Square distribution is correct.

OPTIONS 32535030 as per CLT100 ANSWER 325 EXPLANATION Using the standard formula for sample size or sample size calculator.

If men having High Blood Sugar problems are diagnosed with Diabetes, with the mean blood sugar level to be at 150 and a standard deviation of 10, and any individual greater than 125 Blood Sugar levels can be diagnosed with Diabetes, what is the probability...

OPTIONS Sales Medicine Robotics Marketing ANSWER Medicine EXPLANATION In Clinical applications, Type II error is considered more serious thus MEDICINE is correct.

OPTIONS Z test T test f test ANOVA ANSWER Z test EXPLANATION Z test needs to be used specifically if n > 35, thus Z test is correct.

OPTIONS Increase the confidence level Increase the sampling size Increase the significance level Increase the Power ANSWER Increase the sampling size EXPLANATION The Margin of Error can be reduced by increasing the sampling size, although significance level also plays an important part but “Increase the...

A company surveyed a society to find out the percentage of people who consumed burgers regularly. It went into the survey with a confidence of 95%. The margin of error considered was ±1%. About 25% of 1000 people polled Yes in a society of 10,000...

OPTIONS Model Adequacy Lack of fit Residuals Quality of fit ANWER Quality of fit EXPLANATION Sum Squares always explains quality of fit thus Quality of fit is correct.

OPTIONS Separate the variables and conduct a Simple Linear Regression Drop the predictor that is causing the high VIF and then re-do Regression Live with the variable having high VIF and hope that it is a model adequacy issue Try doing a Curvilinear Regression ANSWER...

OPTIONS Mallows Cp Adjusted R2 R2 Predicted R2 ANSWER Predicted R2 EXPLANATION The other three are not serious considerations.