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Listening Quiz: Giải Thích Phương Pháp Phân Tích Và Giới Hạn – Advanced Level
Th11 12, 2025
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bởi
Anna Phạm
trong
Tiếng Anh Thương Mại (English for Business)
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1.
What is Sarah mainly explaining to Mark?
The method, data, and limitations of an analysis
Why the company should ignore external factors
How to fix missing sales records manually
How to conduct a sales meeting
Explanation:
Sarah explains that they used a regression model, included five years of sales data, handled missing data, tested accuracy, and discussed limitations.
2.
What data did Sarah include in the model?
Customer survey results from this month
Data from all company departments
Sales data from the last five years
Sales data only from the current year
Explanation:
Sarah says, ‘We included sales data from the last five years.’
3.
How did Sarah handle missing data?
She ignored the missing data completely
She filled them in using mean values
She removed the affected records
She asked Mark to find the missing numbers
Explanation:
Sarah says they handled missing data by using mean values.
4.
What can be inferred about the model’s performance when the real data is non-linear?
It will definitely stop working completely
It may be more accurate than expected
It can only be used for external factors
It might be less accurate
Explanation:
Sarah says the model assumes linear relationships only and that this might affect accuracy if the real data is non-linear.
5.
What did Sarah use to check the model’s accuracy?
Cross-validation
External factors
Regression assumptions
Mean values
Explanation:
Sarah says, ‘Yes, we used cross-validation to check accuracy.’
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