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Sample size determination  is the act of choosing the number of observations or  replicates  to include in a  statistical sample . The sample size is an important feature of any empirical study in which the goal is to make  inferences  about a  population  from a sample. In practice, the sample size used in a study is determined based on the expense of data collection, and the need to have sufficient  statistical power . In complicated studies there may be several different sample sizes involved in the study: for example, in a  stratified   survey  there would be different sample sizes for each stratum. In a  census , data are collected on the entire population, hence the sample size is equal to the population size. In  experimental design , where a study may be divided into different  treatment groups , this may be different sample sizes for each group. Sample sizes may be chosen in several different ...

Course Satisfaction at NOU Dear Learner, this survey form has dual purpose. 1) to let you to experience the Google Form and 2) to trace your level of course sanctification in Moodle. So, please respond on the questions given below. * Required Please write your Name  * Your answer Please, select your Gender  * Boy Girl Please select your Subject  * Health Education Nepali Education Educational Studies Economics Political Science Other: Use of Computer and Internet: How do you use following tools for your academic (learning) purpose? Please select one option in each that apply best to you.  * Often Sometimes Rarely Never Use of computer Use of Internet ...