Secondary Source of Data Collection - Published & Unpublished

This ppt covers Secondary Source of Data Collection - Published & Unpublished which covers Types of Secondary Source of Data
Published Sources
Unpublished Sources
Advantages of Secondary Data
Limitations of Secondary Data
Precautions to be taken before using Secondary Data
Key Differences between Primary and Secondary Data

21. Reference
“Unit-12 COLLECTION AND SCRUTINY OF DATA . IGNOU (2017)
Key Differences Between Primary and Secondary Data. Retrieved from: https://keydifferences.co
m/difference-between-primary-and-secondary-data.html