Data Collection Flashcards
Two classifications of Data Sources
Primary & Secondary
the data collector is the one using the data for analysis.
- Data from a political survey
- Data collected from an experiment
- Observed data
Primary
the person performing data analysis is not
the data collector.
- Analyzing census data
- Examining data from print journals or data
published on the internet (opensource
database)
Secondary
Primary Data Collection methods:
- Interview Method
- Questionnaire Method
- Observation Methods
- Registration Methods
involves asking questions and getting
answers from participants in a study.
Interview methods
Interviewing has a variety of forms including —–
individual, face-to-face interviews and face-to-face group interviewing.
is a research instrument consisting of a series of questions and other prompts for the purpose of gathering information from respondents. Although they are often designed for statistical analysis of the responses, this is not always the case.
Questionnaire Method
is a fundamental way of finding out about the world around us. As human beings, we are very well equipped to pick up detailed information about our environment through our senses. However, as a method of data collection for research purposes, observation is more than just looking or listening.
Observation Method
Enforced by private organizations or government agencies for recording purposes. This method of gathering data is perhaps the most reliable because this is enforced by law.
Examples: Birth and Death rates (PSA), Number of registered cars (LTO), List of registered voters
(COMELEC)
Registration Method.
WHY DO WE NEED SAMPLES IN DOING RESEARCH?
is less time-consuming
Less costly
analysis of a sample is less complicated and
more practical
DETERMINING THE SAMPLE SIZE
Using a Census
Using Sample Size of Similar Study
Using Published Tables
Using Formulas to determine Sample Size
Practical for small population.
ü Use the whole population as the sample
ü Not possible for large populations
ü Attractive for small populations (n < 200)
ü Eliminates sampling error unlike using sample
DETERMINING THE SAMPLE SIZE: USING CENSUS
May run the risk of repeating errors that were made in determining sample size for that study
DETERMINING THE SAMPLE SIZE: USING SAMPLE SIZE OF A SIMILAR STUDY
Rely on published tables which provide the sample size for a given set of criteria.
DETERMINING THE SAMPLE SIZE: USING PUBLISHED TABLES
is the act, process or technique of selecting an appropriate sample, or a representative part of the population for the purpose of determining the characteristics of the whole population.
Sampling
