Research, sampling methods for the specific number of 128 people using the tool to collect data: measure the knowledge of the English language, for a list of classes before and after the study analyzed by a computer program.
The researchers randomized 128 people with specific tools used to collect data. Measure knowledge of English language courses for students before and after school. Analysis by computer program
Research on sampling method of 128 specific people the tools used in the data collection including Test of English for the subjects before and after school. Analysis by computer