A citizen in search of work sent to three different organizations, probability of getting an invitation to the interview from the first company equals 0.1 from the second one-0.6 and from the third one - 0.3 find the main value variance, mean square deviation, mide and median of the number of companies, given the positive answer

Q: Does the sample median tend to target the population variance

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Q: Find the variance of these data

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Q: What is the standard deviation of the data {7, 1, 7, 10, 5, 3, 2}?

A: