Quantitative Methods And Analysis

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Quantitative Methods and Analysis

Quantitative Methods and Analysis

Selecting right size for the study

Sample size determination is often an important step in planning a statistical study and it is usually a dif. cult one. Among the important hurdles to be surpassed, one must obtain an estimate of one or more error variances and specify an effect size of importance. There is the temptation to take some shortcuts. Statistical studies (surveys, experiments, observational studies, etc.) are always better when they are carefully planned. Good planning has many aspects. The problem should be carefully defined and operationalized. Experimental or observational units must be selected from ...
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