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The hallmarks of quantitative research are control over extraneous influences (often involving experimental manipulation) and, more generally, statistical approaches to sampling, measurement, and data analysis.However, the simplicity of this general definition does not do justice to the full range of methodologies and data-analysis strategies that fall under the umbrella of quantitative research.
One of the most used methods in this research is the qualitative method of interviews.
The research incorporates the results of several interviews which were held in the form of conversation in order to establish a high level of confidence between the researcher and the respondent.
One way to answer this question would be to survey schools and determine their average class size and the socioeconomic status of the surrounding neighborhood.
The researcher could then compute a correlation coefficient that describes the magnitude of this relationship.
One way to answer this question would be to randomly assign classrooms to be rather small or rather large, then measure student achievement after an appropriate interval of time.
The performance of students in the smaller classes can then be compared to the performance of students in the larger classes.For example, if a scholar were interested in the average class size of elementary schools in Spain, he or she might design a survey asking about the number of students and the number of classrooms (possibly among other variables) and send that survey to every elementary school in Spain.That researcher might also be interested in describing patterns of class sizes across different countries and parts of the world.This method is aimed at opening the students’ feelings, views, and experiences; thus, it does not require a strict procedure and structure.Consequently, it is used the semi-structured format for the interview, which allows developing a guide to the topic but does not set the strict questions.The method of questionnaire allows making the research more quantitative, because it requires gathering standardized information from a specific number of people.This method allows obtaining both quantitative and qualitative data; thus, it is the most appropriate way to research the connection between the alcohol intake and the school performance.In order to conduct the appropriate questionnaire, it was chosen 100 students with no regards to their age, gender, and performance.The questionnaire contained the questions that revealed the respondents’ information on age, gender, and performance as well as the alcohol intake and its frequency.The research uses the documents in order to describe the background of the problem as well as to complement the received results with the reliable scientific findings. French in their article named The effects of alcohol use on academic achievement in high school.In addition, the documentary analysis allows obtaining various statistical data, which add more credibility to the research.