Variety of using Quantitative Method by Inference Statistic

Variety of using Quantitative Method by Inference Statistic

Statistic is usefull for us. There are, to know about something from several data, made hypothes, got reviews and so on. One of two big group in statistic is inference statistic. In this session, we will discus about Quantitative method that applied in inference Statistic. First, we may check about quantitative method.
Quantitative method is a research method that relies less on interviews, observations, small numbers of questionaires, focus groups, subjective also objectives reports and case studies, but is much more focused on the connection and analysis of numerical data and statistics. The objective of quantitative method is to develop and employ mathematical models, theories and hypotheses pertaining to natural phenomena. This method has correlation with measurement. The process of measurement is central to quantitative method because it provides the fundamental connection between empirical observation and mathematical expression of quantitative relationships. This method gather data-information dealing with numbers and anything that measurable. Statistics, tables and graphs are often to present the result of these method. It is also show causal relation between variable, specific and looking for predictive value of generalization. it’s need representative and big sample because we must analyses after collecting data. Process of this method is linear.
The purpose of scientific theory is to provide and understandable, simple set of predictions regarding unknow events. The purpose of an excellent research design is to ensure that an investigation will produce results that provide clear evidence with respect to the issues. In this process, statistics has two functions : (1)to summarize the research results with descriptive statistics and (2)to provide probability statements regarding the results with inferential statistics. Now, we talk about inference statistics and why we choose inference statistics.
The word inference as used in science means quite literally to infer one thing from another. Two types of inference : deductive inference and inductive inference (Jum C.Nunnally,1975:40). Deductive inference is one type of inference that concerned purely with the manipulations of symbols system which do not necessarily have counterparts in the real world. Second, sets is apart of other types of logic is that any conclusion is either absolutely true or absolutely false. In contrast to deductive inference, inductive inference is concerned with the rule for testing theories about the world of real events. The word induce means to take statements about relations among observable events. An inductive inference is never finally accepted as absolutely true. Some inductive inference are supported by so many observations that one can be extremely confident that they will hold true tomorrow.
Simple example, deductively inferred, that a box which is 4 feet on each side contains a total of 64 cubic feet. Similarly, it can be inferred that if Sanni is taller than Susi and Susi is taller than Siti, then Sanni is taller than Siti. Example of inductive inference if the feather and steel ball falling at the same rate in vacuum.
If we want to aplly quantitative method in inferential statistics. we must know about your method, analyse your problems and use inference statistic to get the solutions. Lets try… (^_~)

Reference :
1. Nunnally, Jum.C.1975.Introduction to Statistics for Psychology and Education.USA:McGraw-Hill,Inc.
2. www.wikipedia.com/quantitative-research
3. www.poliban.ac.id/up2m/download/metodologi%20penelitian%20

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sanni merdekawati
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