A valid Multiple Linear Regression (MLR) is characterized by all of these except _______________________.

MLR is conducted based on a deliberate form of experimentation

It is an assumption that the X's (inputs) are not correlated to each other

The X's (inputs) are assumed to be independent of each other

MLR is conducted based on a deliberate form of experimentation

The Residuals from MLR analysis have to be Normally Distributed

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

A reactant value between 2 and 4 units yields around 20 to 40

The independent variable is the reactant

If the reactant was 6 units, with 95 % confidence we would expect a minimum yield of 100 units

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

A reactant value between 2 and 4 units yields around 20 to 40

When the reactant increases, the expected yield would increase

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

r2 value is smaller than the absolute value of r

Correlation Coefficient equals r2

Coefficient of Determination is less than r2

Correlation Coefficient equals r divided by 2

When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

Residuals will represent a Linear Regression

Some Residuals higher than others

Some Residuals lower than others

All Residuals within 2 Standard Deviations of the Mean

Residuals will represent a Linear Regression

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

The dependent variable is the outside temperature

The relationship between outside temperature and number of customers per hour is a Linear Regression

The dashed lines indicate with 95% confidence where all of the process data should fall between

The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

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. Select the answer that best states the Practical Problem.

Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components.

If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components.

If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components.

Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components.

If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components.

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?

The Mean is greater than $ 4,200.

The Standard Deviation is equal to $300.

The Mean is greater than $ 4,200.

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).

Focuses on equality of the Median of the two populations

More widely applicable than the traditional ''t-test''

Testing the identity of two populations

Focuses on equality of the Median of the two populations

Less powerful than the traditional ''t-test''

More widely applicable than the traditional ''t-test''

Assessing process proportion as opposed to evaluating a process with respect to a set target can be done using which of these?

Process proportion equals some desired value

Process proportion equals some value range

Process proportion equals some desired value

Proportion of the tail is equal

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).

The Main Effects are confounded with only 4-way interactions

The Experimental Design is half-fractional

The experiment has 8 experimental runs with the first factor at the high level

The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions

The Main Effects are confounded with only 4-way interactions

The Experimental Design is half-fractional

The experiment has 8 experimental runs with the first factor at the high level

The experiment has only 4 experimental runs with the 5th factor at the high level

Which statement(s) are correct about the Pareto Chart shown here for the DOE analysis? (Note: There are 2 correct answers).

It is unknown from this graph how many factors were in the Experimental Design

The effects to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 0.05

It is unknown from this graph how many factors were in the Experimental Design

The factors to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 2.06

The effects to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 0.05

The factors to keep in the mathematical model with a 5% alpha risk are BE, AB, A and AD

An operator is measuring the distance between two points. Which is most likely to be influenced by the operator?

All of these answers are correct

Appropriate measures means that measurements are ______________.

All of these answers are correct

In a good Measurement System the most variation will be with part-to-part measurements. What should you do if the majority of variation is associated with the Gage R&R assuming the gage is technically capable?

Focus on fixing the Repeatability and Reproducibility of the measurement device

Focus on trimming the Part-to-Part variation

Run another MSA test with the machine

What aspects of Measurement Systems Analysis (MSA) studies are applicable when the process used to measure does not damage the part?

Nondestructive variable gage R&R and Nested Study

Destructive variable gage R&R and Crossed Study

Destructive variable gage R&R and Nested Study

Nondestructive variable gage R&R and Crossed Study

Nondestructive variable gage R&R and Nested Study

Each of the items listed would impact the Process Capability for a process with a continuous output except ___________________.

Shape of process data distribution (e.g. Normal Distribution)

When we compare short-term and long-term Capability which of these is true?

Cp is better for the short term

Both short-term and long-term performance are alike

Performance tends to improve over time

Six Sigma ICBB Practice Test 3 - Free Online Exam Prep & Questions

A valid mathematical Regression represents all of the characteristics shown except

___________________________.

The residuals when plotted follow a Normal Distribution

The sum of the residuals is zero

All of the standardized residuals will be within 3 Standard Deviations

Most standardized residuals are within 2 Standard Deviations

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Six Sigma ICBB Practice Test 3

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