Câu hỏi về Nghiên cứu Khoa học

Which type of sampling ensures that every participant has an equal chance of being selected?

• Random sampling

• Stratified sampling

• Purposive sampling

• Convenience sampling

What is the main purpose of a pilot study?

• To refine research findings

• To test the feasibility of research methods

• To expand the sample size

• To summarize data collection

Which of the following methods is most suitable for collecting qualitative data?

• Survey

• Interview

• Questionnaire

• Standardized tests

What is the main advantage of using structured interviews?

• Flexibility in responses

• Consistency in data collection

• Subjective interpretation of data

• Open-ended questions

Which of the following is a primary method for collecting quantitative data?

• Observation

• Focus group

• Standardized tests

• Case study

Which statistical test is used to compare the means of two independent groups?

• ANOVA

• T-test

• Chi-square test

• Regression analysis

What does coding refer to in qualitative data analysis?

• Writing research questions

• Classifying data into themes

• Conducting statistical tests

• Collecting numerical data

Which type of data is analyzed by descriptive statistics?

• Ordinal data

• Nominal data

• Quantitative data

• Qualitative data

What is the goal of inferential statistics in research?

• To describe the characteristics of a sample

• To generalize findings from a sample to a population

• To collect a large amount of data

• To avoid making conclusions about the population

Which software is commonly used for statistical data analysis in applied linguistics?

• NVivo

• Excel

• SPSS

• Word