MEANING AND DEFINITION OF DATA COLLECTION
PURPOSE OF DATA COLLECTION
- to obtain information
- to keep on record
- to make decisions about important issues,
- to pass information on to others
IMPORTANCE OF DATA COLLECTION
- Decision Making
- Marketing Research
- Academic Research
- Machine learning
- Artificial intelligence
THERE ARE TWO SOURCES OF DATA
-Primary Data
- Secondary Data
PRIMARY DATA
Data collected by the investigator for his own purpose, for the first time, from beginning to end, is called primary data. It is collected from the source of origin.
ACCORDING TO WESSEL "Data originally collected in the process of investigation are known as primary data."
PRIMARY DATA: are those which are collected a fresh and for the first time and thus happen to be original in character and known as Primary data.
You can also read :-BUDGETING CONTROL
METHODS OF PRIMARY DATA
- Surveys
- Focus groups
- Questionnaires
- Personal interviews
- Experiments and observational study
- Delphi Techniques
Advantages of primary data
- Answers a specific research question
- Data are current
- Source of data is known
- Secrecy can be maintained
Disadvantages of primary data:
i. Wider coverage: More number of researchers are required.
ii. Time and effort required for data collection.
iii. Responses may be doubtful
iv. Trained persons required for data collection
v. Incomplete questionnaire
vi. Higher cost
vii. The questions must be simple to understand and respond
SECONDARY DATA
Definition: When the data are collected by someone else for a purpose other than the researcher's current project and has already undergone the statistical analysis is called as Secondary Data
OR
SECONDARY DATA: Are those which have been collected by someone else and which have already been passed through the statistical process are known as Secondary data.
Secondary Data - Examples
- County health departments
- Vital Statistics - birth, death certificates
- Hospital, clinic, school nurse records
- City and county governments
- Surveillance data from state government programs
OR
Methods of Secondary data
- financial Reports
- Sales Reports
- Government Reports
- vision Statements
- Mission
Advantages of Secondary Data
1. Economical
2. Less time consuming
3. Often available in edited and filtered format
4 Saves time and money if on target
5. Useful to conduct exploratory research
6. Certain type of primary data are not within the capabilities of a business organizations
Disadvantages of Data Collection
- May not give adequate detailed information
- May not be on target with the research problem
- Quality and accuracy of data may pose a problem
DIFFERENCE BETWEEN PRIMARY DATA Vs SECONDARY DATA
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