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Listening Quiz: Giải Thích Khoảng Tin Cậy Cho Các Bên Liên Quan – Medium Level
Th3 30, 2024
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà khoa học dữ liệu (English for Data Scientist)
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1.
What is the main purpose of Sophia’s explanation to Mark?
To compare confidence intervals with other statistics
To persuade Mark to collect more data for a report
To help Mark understand what a confidence interval means
To show how to calculate a confidence interval step by step
Explanation:
Sophia explains that a confidence interval is an estimated range, discusses the 95% confidence level, and explains what a wide interval means, all to help Mark understand the concept.
2.
According to Sophia, what does a wide confidence interval mean?
The result is more precise
The result is less precise
The result is definitely correct
The data were collected too quickly
Explanation:
Sophia says, ‘A wide interval means less precise information.’
3.
What confidence level does Sophia usually say is used for confidence intervals?
50%
95%
80%
90%
Explanation:
Sophia states, ‘Usually, we say 95% confident the true value is inside.’
4.
Why does Mark say, ‘This helps me explain to stakeholders’?
He now understands the concept better and can describe it to others
He wants Sophia to speak to the stakeholders instead of him
He is still confused but trying to be polite
He plans to replace confidence intervals with guesses
Explanation:
Mark says the explanation helps him, which implies he understands the idea better and feels able to explain it to stakeholders.
5.
How can the confidence interval be made narrower, according to Sophia?
By collecting more data or improving methods
By choosing a lower confidence level only
By using fewer measurements
By ignoring small chances of error
Explanation:
Sophia says, ‘Yes, by collecting more data or improving methods.’
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