Cause-and-Effect Diagram

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Interrelationship Diagraph
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Interrelationship Diagraph

• An Interrelationship Diagraph allows one to
  systematically identify, analyze, and classify
  the cause and effect relationships that exist
  among all critical issues.
• It can also be used to display the same
  information for desired outcomes. It shows
  graphically the logical relationships between
  factors.

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Problem

• Omico company has a project named Sta. Rosa Homes
  and they only have manual computation of buyers
  account.
• Omico company has a difficulty in organizing the
  buyers documents and records.

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Business Process
Buyer
Administrative Assistant
Employee
Checks and monitors buyers payments
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These are the steps on how to create a
Interrelationship Diagraph

• STEP 1 Place the problem statement or desired
  outcome in the middle.
• STEP 2 Draw a double circle around the statement
  or outcome.

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• STEP 3 Arrange the major items in a circle
  around the problem statement.
• STEP 4 Draw lines between ideas that are
  related. Put an arrowhead on the end of the
  line that shows the direction of the cause
  and effect relationship.
• STEP 5 Count the number of arrows leading into
  and out of each idea card. Place the
  number of arrows going out of the card, a
  slash and the number of arrows coming into
  the card above each card.

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2/2
Check buyers form
3/0
1/0
Confirm Availability
Buyer signs RA
0/1
1/2
0/4
1
1/1
Monitors buyers payments
1/0
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• STEP 6 The elements with the most arrows going
  out is the key cause factor. Place a
  double box around it.
• STEP 7 The ones with the most incoming arrows
  will be key outcomes or results. Place a
  double diamond around it.
• STEP 8 Give each team member a copy of the
  results and discuss them.

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Check buyers form
Validates Info of the buyer
Buyer fills out Info Sheet
Buyers Records
Confirm Availability
Buyer signs RA
Chooses lot/house
Follow up buyer w/ deadline of documentary
Monitors buyers payments
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Recommendations

• Proposed system of the group Buyers Account and
  Project Monitoring System
• -Organized and comprehensive analysis of Sta.
  Rosa Homes Project buyers record
• -Accurate encoding of buyers detailed account
  information
• -Properly monitor payments