Two. Statistic reference or statistical inference (Interential Statistics) a statistical study of the samples (Sample) then the results obtained from the sample. The reference to demographic characteristics or statistics (Statistics) from the sample to the summary parameters (Parameters) of the population to acquire samples is of paramount importance to the representation of the population. By reference to the statistical estimation (Estimation) and hypothesis testing (Hypothesis Testing).
, for data analysis, teachers should select appropriate statistical information on the nature of the research and to meet the objectives set. The statistics are used in research and development to include.
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