Math  /  Data & Statistics

QuestionSuppose that, when taking a random sample of three students' GPAs, you get a sample mean of 3.90 . This sample mean is far higher than the college-wide (population) mean. Does this prove that your sample is biased? Explain. What else could have caused this high mean?
Choose the correct answer below. A. Nothing other than bias could have caused this small mean. B. The sample may not be biased. The measurements may not have been precise. C. One or more of the students could have lied about their GPAs. D. The sample may not be biased. The high mean might have occurred by chance, since the sample size is very small.

Studdy Solution
The answer is **D**.
The sample may not be biased.
The high mean might have occurred by chance, since the sample size is very small.
It's totally possible to get a high sample mean just by random luck, especially with a small sample size.

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