IASSC IASSC Certifications ICBB Questions & Answers

• Question 201:

  Statistical Difference is the magnitude of difference or change required to distinguish between a true difference, brought about by change or improvement, and one that could have occurred by chance.

  A. True

  B. False

  Correct Answer: A

• Question 202:

  When conducting a Hypothesis Test using Continuous Data the proper sample size is influenced only by the extent to which we need to assess a Difference to be detected but not the inherent variation in the process.

  A. True

  B. False

  Correct Answer: B

• Question 203:

  Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n) _______________.

  A. Type I Error

  B. Type II Error

  C. Type III Error

  D. Alpha Error

  Correct Answer: B

• Question 204:

  If the results from a Hypothesis Test are located in the "Region of Doubt" area, what can be concluded?

  A. Rejection of the Alpha

  B. We fail to reject the Null Hypothesis

  C. The test was conducted improperly

  D. We reject the Null Hypothesis

  Correct Answer: D

• Question 205:

  For the data shown here which statement(s) are true? (Note: There are 2 correct answers).

  

  A. With 95% confidence, we cannot conclude if the samples are from three Normal Distributions

  B. With greater than 95% confidence, we conclude the samples are from Non-normal Distributions

  C. If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test

  D. If we wanted to compare the Central Tendencies of these three samples we could use Mood's Median test

  E. If we wanted to compare the Central Tendencies of all three samples we could use the Mann- Whitney test

  Correct Answer: BD

• Question 206:

  Assessing process proportion as opposed to evaluating a process with respect to a set target can be done using one or more of these. (Note: There are 2 correct answers).

  A. Process proportion equals some desired value

  B. Process proportion equals some value range

  C. Target is current

  D. When we deal with Attribute type data

  E. Proportion of the tail is equal

  Correct Answer: AD

• Question 207:

  A Non-parametric Test should be used if just one distribution is not Normal out of the two or more gathered.

  A. True

  B. False

  Correct Answer: A

• Question 208:

  The Mann-Whitney test is a powerful test and is unique to situations from which of the choices listed? (Note: There are 2 correct answers).

  A. Testing the identity of two populations

  B. Focuses on equality of the Median of the two populations

  C. Less powerful than the traditional "t-test"

  D. More widely applicable than the traditional "t-test"

  Correct Answer: BD

• Question 209:

  An ANOVA used across many dependent variables could increase the Beta risk.

  A. True

  B. False

  Correct Answer: B

• Question 210:

  The relationship between a response variable and one or more independent variables is investigated and modeled by use of which of these?

  A. X-Y Matrix

  B. Baldridge Assessment

  C. Critical X's Definition

  D. Analysis of Variance (ANOVA)

  Correct Answer: D