Basic Research Design Basic Research Design Variables Source

Basic Research Design : Basic Research Design Variables Source of Data Collection Data Processing/ Organization Analysis of Data T. SUKHVIBUL : 7

Basic Research Design 1) Variables 1. 1) Type of Variables Independent variable (S), X Dependent variable (S) , Y Extraneous Variable/Control Variable (S) , Z - Extraneous variable (S) - Intervening variable (S) - Suppressive variable (S) 1. 2) Extraneous Variable/Control Variable - Background - Development/Change - Others : Homogeneity and Heterogeneity : Identity : Time : Place, Location T. SUKHVIBUL : 3

Basic Research Design 2) Source of Data 2. 1) Type of Data : - Primary Data / Secondary Data - Quantitative Data / Qualitative Data - Time Series Data / Cross Sectional Data - Level of Data (Measurement( Nominal /Categorical Scale : Equivalence Ordinal Scale Interval Scale Ratio Scale 2. 2) Population/Universe and Element/Unit - Finite population - Infinite population 2. 3) Sample/Subject T. SUKHVIBUL : 4

Basic Research Design 2) Source of Data 2. 4) Target/Parent Population and Control group 2. 5) Sample Size and Sampling/Selection Sample Size : -Formulation - Table Sampling : Probability sampling 1. Simple Random Sampling : Lottery + Simple Random Sampling with Out Replacement + Simple Random Sampling with Replacement : Random Table T. SUKHVIBUL : 5

Basic Research Design 2) Source of Data 2. Systematic Random Sampling 3. Stratified Random Sampling 4. Cluster Random Sampling 5. Multi-Stage Random Sampling Selection : Non-Probability sampling 1. Accidental/Convenience Sampling 2. Quota Sampling 3. Purposive Sampling 4. Snowball sampling T. SUKHVIBUL : 6