Mathematical statistics, test, 24 questions with answer

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Mathematical statistics, test, 24 questions.
1. From the general population sample extracted volume, frequency polygon which has the form:



1. 12
2. 9
3. 67
4. 11

2.Moda variation number 3, 4, 6, 6, 7, 10, 11, 12 is equal to:
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