This document discusses secondary and primary data sources for research methodology. Secondary data refers to data that has already been collected and processed by others, while primary data is data collected for the first time by the researcher. Some advantages of secondary data include time and cost savings, while limitations include inappropriate or low quality data. Primary data collection provides original, unbiased information directly from respondents but has disadvantages of taking more time and resources to collect large volumes of raw data.
2. SECONDARY DATA
The data which is collected by some person and processed and used by any
other person or agency is called secondary data. Secondary data can be
published resources or unpublished resources.
3. ADVANTAGES
saving of time
saving of money
Feasibility of both longitudinal and international comparative studies
5. PRIMARY DATA
The data which is collected for first time is known as primary data.
Direct personal investigation
Indirect oral interviews
Information received to local agency
Mailed questioner method
Schedule send to enumerators
6. ADVANTAGES
Basic data
Un biased information
Original data
Data from the primary market/ population
Data direct from the population
7. LIMITATION
Large volume of data
Huge volume of population
Time consuming
Direct and personal intervention has to be there
Raw data
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