1. It is an objective, systematic, empirical investigation of observable phenomena through the use of computational techniques. 2. It was coined from the French word "cerhier" which means seek; prefix "re" means to repeat. 3. To arrive at a more reliable data analysis, a large sample size is required. Random sampling is recommended in determining the sample size to avoid researcher's bias in interpreting the results. 4. Data are in the form of numbers and statistics, oftem organized and presented using table, charts, graphs and figures that consolidate large numbers of data to show trends, relationships, or differences. 5. It seeks accurate measurement and analysis of target concepts. It is not based on mere intuitions/guesses. 6. Reliable quantitative studies can be repeated to verify or confirm the correctness of the results. 7. By using mathematical calculations and with the aid of computers, if-then scenarios may be formulated thus predicting future results. 8. those that cause, influence, or affect outcomes. They are invariably called treatment, manipulated, antecedent or predictor variables. 9. those that show the effects or results or outcomes of the influence of the independent variables. 10. This variable can assume rank values. There is a clear ordering of the variables. 11. refers to a sampling technique in which samples are obtained using some objective chance mechanism, thus involving randomization. 12: the extent to which a research instrument is related to other instruments that measure the same variables. 13: is a technique when there is no way of estimating the probability that each element has of being included in the sample and no assurance that every element has a chance of being included. 14: is a list of behaviors, characteristics, or other entities that the researcher is looking for. 15: is more useful when a behavior needs to be evaluated on a continuum.