StatTutor Lesson - Robustness Again

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Questions 1-3

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Question 1.

When are two-sample t procedures most robust?

A.
B.
Correct. Equal sample sizes should be used whenever possible to give the most accurate results.
Incorrect. Equal sample sizes should be used whenever possible to give the most accurate results.
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Question 4

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Question 4.

True or false: Results from a two-sample t procedure may be worthless if data are not properly collected.

A.
B.
Correct. The most important condition is appropriate data collection; the analysis may be worthless if the data are not any good.
Incorrect. The most important condition is appropriate data collection; the analysis may be worthless if the data are not any good.
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