IASSC 'L2P' Black Belt Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
For a Normal Distribution as samples size increases the Range in Mean and Standard Deviation
decrease relative to the Mean and Standard Deviation of the population.
A. True
B. False - CORRECT ANSWER -A
Some of the sources for different types of error that can be quantified using Statistical Analysis
are ___________________.
A. Error in sampling
B. Bias in sampling
C. Error in measurement
D. All of these answers are correct - CORRECT ANSWER -D
Since Normality is required if we intend to use the data collected as a predictive tool. To test for
Normality of data we must determine if the P-value is ___________.
A. Equal to 0.05
B. Less than 0.05
C. Greater than 0.05
D. Greater than 0.5 - CORRECT ANSWER -C
The Normal Distribution is considered to be the most important distribution in statistics and,
among other things is defined as having a total area under the curve of 1, is mounded and
symmetrical and the Mean, Median and Mode are _____________.
A. All evenly divisible by 3
B. Twice the Standard Deviation
,C. Within 10% of each other
D. The same number - CORRECT ANSWER -D
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. Alpha Error
B. Type I Error
C. Type II Error
D. Type III Error - CORRECT ANSWER -C
A statistical test or Hypothesis Test is performed to reject or fail to reject a stated hypothesis and
it converts the Practical Problem into a Statistical Problem.
A. True
B. False - CORRECT ANSWER -A
How many experimental runs exist in a Full Factorial and fully randomized design for 5 factors
with 2 replicates for the Corner Points and no Center Points? The factors in the experiment are
only at 2-levels.
A. 10
B. 128
C. 256
D. 64 - CORRECT ANSWER -D
If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16
experimental runs which statement(s) are correct? (Note: There are 3 correct answers).
A. The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions
are
, confounded with the 3-way interactions
B. The Main Effects are confounded with only 4-way interactions
C. The Experimental Design is half-fractional
D. The experiment has 8 experimental runs with the first factor at the high level
E. The experiment has only 4 experimental runs with the 5th factor at the high level - CORRECT
ANSWER - BCD
With Measurement System Analysis we are concerned with two issues that impact the potential
variability of the data. They are ____________ and Accuracy.
A. Spread
B. Reliability
C. Precision
D. Deflection - CORRECT ANSWER -C
An operator is measuring the distance between two points. Which is most likely to be influenced
by the operator?
A. Precision of the measurement
B. Accuracy of the measurement
C. Calibration of the instrument
D. All of these answers are correct - CORRECT ANSWER -D
Accuracy can be assessed in several ways and a fairly accurate means of measurement is visual
comparison.
A. True
B. False - CORRECT ANSWER -B
Measurement __________ is defined as the difference between the observed and the expected
values for a given set of data.
ACTUAL Exam Questions and CORRECT
Answers
For a Normal Distribution as samples size increases the Range in Mean and Standard Deviation
decrease relative to the Mean and Standard Deviation of the population.
A. True
B. False - CORRECT ANSWER -A
Some of the sources for different types of error that can be quantified using Statistical Analysis
are ___________________.
A. Error in sampling
B. Bias in sampling
C. Error in measurement
D. All of these answers are correct - CORRECT ANSWER -D
Since Normality is required if we intend to use the data collected as a predictive tool. To test for
Normality of data we must determine if the P-value is ___________.
A. Equal to 0.05
B. Less than 0.05
C. Greater than 0.05
D. Greater than 0.5 - CORRECT ANSWER -C
The Normal Distribution is considered to be the most important distribution in statistics and,
among other things is defined as having a total area under the curve of 1, is mounded and
symmetrical and the Mean, Median and Mode are _____________.
A. All evenly divisible by 3
B. Twice the Standard Deviation
,C. Within 10% of each other
D. The same number - CORRECT ANSWER -D
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. Alpha Error
B. Type I Error
C. Type II Error
D. Type III Error - CORRECT ANSWER -C
A statistical test or Hypothesis Test is performed to reject or fail to reject a stated hypothesis and
it converts the Practical Problem into a Statistical Problem.
A. True
B. False - CORRECT ANSWER -A
How many experimental runs exist in a Full Factorial and fully randomized design for 5 factors
with 2 replicates for the Corner Points and no Center Points? The factors in the experiment are
only at 2-levels.
A. 10
B. 128
C. 256
D. 64 - CORRECT ANSWER -D
If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16
experimental runs which statement(s) are correct? (Note: There are 3 correct answers).
A. The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions
are
, confounded with the 3-way interactions
B. The Main Effects are confounded with only 4-way interactions
C. The Experimental Design is half-fractional
D. The experiment has 8 experimental runs with the first factor at the high level
E. The experiment has only 4 experimental runs with the 5th factor at the high level - CORRECT
ANSWER - BCD
With Measurement System Analysis we are concerned with two issues that impact the potential
variability of the data. They are ____________ and Accuracy.
A. Spread
B. Reliability
C. Precision
D. Deflection - CORRECT ANSWER -C
An operator is measuring the distance between two points. Which is most likely to be influenced
by the operator?
A. Precision of the measurement
B. Accuracy of the measurement
C. Calibration of the instrument
D. All of these answers are correct - CORRECT ANSWER -D
Accuracy can be assessed in several ways and a fairly accurate means of measurement is visual
comparison.
A. True
B. False - CORRECT ANSWER -B
Measurement __________ is defined as the difference between the observed and the expected
values for a given set of data.
