Lean Six Sigma Green Belt Training - Scatter Diagrams
Which one of the following best describes the relationship of the points shown on this Scatter Diagram?
No linear correlation exists
This technique is performed by identifying related subgroups within the data to discover if a relationship exists between two variables that are plotted on a Scatter Diagram.
Stratification
The Scatter Diagram is primarily used to...
display a possible relationship between two variables.
The Scatter Diagram...
shows the type of correlation that may exist between two variables.
Which one of the following best describes a positive correlation between two variables as displayed on a Scatter Diagram?
As the values of the independent variable increase the corresponding values of the dependent variables increase.
The six-step process to build a Scatter Diagram is...
Collect Data, Arrange Data, Make Chart, Plot Data, Understand Chart, and Select Action.
What is the term used to describe the process when an analyst predicts a value for the dependent variable outside the range of the data plotted on the Scatter Diagram?
Extrapolation
When plotting a Scatter Diagram, the values of each variable are sorted independently from smallest to largest and then plotted as pairs.
False
Correlation refers to any kind of association or interdependence between two sets of data or variables.
True
The strength of the relationship between two variables is determined visually by the tightness of the cluster of points on the Scatter Diagram around the line of best fit drawn through the points.
True
Which one of the following best describes the relationship of the points shown on this Scatter Diagram?
Weak Negative
Which one of the following best describes the relationship of the points shown on this Scatter Diagram?
Weak Positive
