Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt Basic Statistical Tools Questions and Answers 2

Question 1

Which measure of central tendency is most affected by extreme outliers in a data set?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 2

A process has a standard deviation of 3.5. What is the variance?

Accepted Answer

12.25

Answer

7.0

Answer

1.87

Answer

3.5

Question 3

In a Pareto chart, what does the cumulative line represent?

Accepted Answer

The running total percentage of all categories combined

Answer

The mean of each category

Answer

The standard deviation across categories

Answer

The median frequency of defects

Question 4

What type of data is represented by categories such as defect types or machine identifiers?

Accepted Answer

Attribute data

Answer

Continuous data

Answer

Discrete data

Answer

Variable data

Question 5

When constructing a histogram, what does the height of each bar represent?

Accepted Answer

The frequency of data points within that interval

Answer

The range of the data

Answer

The cumulative percentage

Answer

The standard deviation of that bin

Question 6

Which graphical tool displays the five-number summary (minimum, Q1, median, Q3, maximum)?

Accepted Answer

Box-and-whisker plot

Answer

Scatter diagram

Answer

Run chart

Answer

Control chart