jagger68
03.08.2019 •
Mathematics
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Ответ:
Step-by-step explanation:
Ответ:
C. nonrandom and biased
Step-by-step explanation:
In random sampling, there should be no pattern when designing a sample, but Li selected a sample in her first-period class. This means that Li's sample is not random.
Since 28 is too smaller than 600, the rest of the students can have different thinking from the her first -period class students. Therefore the sample must be biased.
Therefore, option C is correct the sample explained by Li is non random and biased.