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Listening Quiz: Bàn Về Lựa Chọn Mô Hình Cho Phân Tích Đa Cấp – Easy Level
Th11 14, 2024
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà nghiên cứu học thuật (English for Academic Researcher)
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1.
What is Jessica mainly trying to do in the conversation?
Compare health data from different hospitals
Decide whether to use fixed effects only
Choose the best multilevel model for her health data
Explain how AIC and BIC are calculated
Explanation:
Jessica says she needs help with model selection and wants to find the best model for her multilevel health data.
2.
What do AIC and BIC measure, according to Michael?
Model fit and complexity
Random effects and fixed effects
Sample size and variance
Health data quality and accuracy
Explanation:
Michael explains that AIC and BIC measure model fit and complexity.
3.
What does Michael say about lower AIC or BIC values?
They only matter for fixed effects models
They mean the model is too simple
They are not useful for comparison
They show a better model
Explanation:
Michael directly says that lower values show a better model.
4.
Why does Michael tell Jessica to check random effects?
Because random effects always lower AIC and BIC
Because random effects are only used in health studies
Because random effects replace model comparison criteria
Because random effects are important in multilevel models
Explanation:
Michael says random effects are important in multilevel models, so Jessica should consider them when selecting a model.
5.
Why does Jessica ask, “Should I also check random effects?”
She wants to stop using multilevel models
She is asking Michael to calculate AIC and BIC for her
She wants to make sure she is evaluating the model thoroughly
She has already chosen the best model
Explanation:
Jessica is trying to select the best model, so she asks whether random effects should also be checked as part of the evaluation.
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