SImulation III unit missed ppt

—Generally the word data is taken to mean quantitative data or numbers. Certainly numeric data are very important in simulation modeling and in some cases large quantities of such data are required. In various ways we can collect data.

—Secondary data – data someone else has collected

—This is what you were looking for in your assignment.

—Primary data – data that is collected by him/herself 

Collecting Input Data 

—Data collection devices

—Time collection mode and units

—Other data collection considerations:

—Unbiased Data

—Avoid Process Disruption

 The sources of input data are

  Historical records    Manufacturer specifications  Vendor claims

—Operator estimates  Management estimates  Automatic data capture

—Direct observation

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