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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?
How to conduct a sales meeting
The method, data, and limitations of an analysis
Why the company should ignore external factors
How to fix missing sales records manually
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
Sales data only from the current year
Data from all company departments
Sales data from the last five years
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 asked Mark to find the missing numbers
She removed the affected records
She filled them in using mean values
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 might be less accurate
It may be more accurate than expected
It can only be used for external factors
It will definitely stop working completely
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?
External factors
Regression assumptions
Mean values
Cross-validation
Explanation:
Sarah says, ‘Yes, we used cross-validation to check accuracy.’
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