organization of research
focused, coherent, cohesive
A quantitative research design that bases its research method on a scientific activity called
EXPERIMENTAL RESEARCH DESIGN
It is a bias-free selection that ensures objectivity of results. This design is the best way to examine causal relationships.
True Experimental Design
Research with the capacity to yield findings that are seemingly or more or less true
Quasi-experimental Design
A quantitative research design that is capable of giving qualitative and quantitative data, but more on qualitative data; hence, this is often used in the field of social sciences.
NON-EXPERIMENTAL RESEARCH DESIGN
random selection – unbiased or accurate manner of selecting the right people to represent the population
probability sampling
purposive or controlled selection of sampling
nonprobability sampling
Composed of individuals with varied abilities
Heterogeneity of Population
The accuracy of the sample depends also on how precise or accurate your methods are in calculating the members used in measuring the chosen samples or giving a certain value to each of them
Statistical Techniques
research needs
Time and Cost. Attention, time, and effort
Selection is based on pure chance. All population is participants
Probability Sampling
Picking out from the list every 5th or every 8th member listed in the sampling frame until the completion of the desired total number of respondents
SYSTEMATIC SAMPLING
Based on pure chance
RANDOM SAMPLING
Subdivided into strata, subgroups, or subsamples during the stage of the data analysis
STRATIFIED SAMPLING
Rather than in separate individuals such as choosing 5 classes of 40 students each from a whole population of 5,000 students.
CLUSTER SAMPLING
Not chosen randomly, but purposed fully
Nonprobability Sampling
Choosing specific samples that you know correspond to the population in terms of one, two, or more characteristics
QUOTA SAMPLING
Willing to participate as respondents in the research project
VOLUNTARY SAMPLING
Choosing respondents whom you have judge as people with good background knowledge or with the great enthusiasm about the results
PURPOSIVE SAMPLING
Picking out people who are easy to find or locate and willing to establish contact with you.
AVAILABILITY SAMPLING
Selecting samples from several alternative samples
SNOW BALL SAMPLING