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Free IASSC ICBB Practice Exam with Questions & Answers

Questions 1

It would be more likely than not for a Belt conducting a Regression Analysis to find that the _______________________.

Options:
A.

r2 value is smaller than the absolute value of r

B.

Correlation Coefficient equals r2

C.

Coefficient of Determination is less than r2

D.

Correlation Coefficient equals r divided by 2

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Questions 2

The validity of the decision made with Hypothesis Testing is dependent upon all of the following except ______________________.

Options:
A.

Beta risk

B.

Range of data

C.

Alpha risk

D.

Sample size

Questions 3

What conclusion is most correct about the Experimental Design shown here with the response in the far right column?

ICBB Question 3

Options:
A.

No factor has enough statistical confidence greater than 95% to have an impact on the response rate

B.

Constant, Adv and Bev are the only factors statistically affecting the response rate with 95% confidence or more

C.

If the Adv is increased from the low level to the high level, the response rate increases

D.

The response level is statistically concluded to only need the Adv and Bev factors set at the low level to get the largest response rate

E.

This design does not have enough experimental runs to conclude anything as evidenced by the lack of P-values in the MINITABTM output

Questions 4

All the data points that represent the total set of information of interest is called the ________________ .

Options:
A.

Population

B.

Sample

C.

Frame

D.

Spread

Questions 5

A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. The Alternative Hypothesis in the above example is?

Options:
A.

The Standard Deviation is equal to $300

B.

The Mean is less than $4,320

C.

The Mean is equal to $4,060

D.

The Mean is less than $4,200

E.

The Mean is greater than $ 4,200

Questions 6

Which statement is NOT correct about the Fitted Line Plot shown here?

ICBB Question 6

Options:
A.

The independent variable is the reactant

B.

If the reactant was 10 units, with 95% confidence we would expect a minimum yield of 148 units

C.

With at least 95% confidence, we can expect less than 10 units of Yield when the reactant is at a value of 1

D.

A reactant value between 6 and 8 units yields around 40 to 60

E.

When the reactant increases, the expected yield would increase

Questions 7

A ___________ is used primarily to track the stability of the average value of a metric of interest.

Options:
A.

NP Chart

B.

Xbar-R Chart

C.

I-MR Chart

D.

C Chart

Questions 8

If in an experiment all possible variable pairs sum to zero the design is Orthogonal.

Options:
A.

True

B.

False

Questions 9

A valuable tool to use during the Measure Phase to show material and information flow throughout an entire process is the ______________ .

Options:
A.

Value Stream Map

B.

FMEA

C.

Pareto Chart

D.

Standard Operating Procedure

Questions 10

Cost of Poor Quality (COPQ) can be classified as Visible Costs and Hidden Costs. Which of these items is a Visible Cost?

Options:
A.

Lost Customer Loyalty

B.

Time Value of Money

C.

Returns

D.

Late Delivery

Exam Code: ICBB
Certification Provider: IASSC
Exam Name: IASSC Lean Six Sigma – Black Belt
Last Update: Feb 11, 2025
Questions: 300

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