摘要：In practice, a question might not tell you whichdistributionto use. Furthermore, you might be given somedataand asked whichdistrib

In practice, a question might not tell you which distribution to use. Furthermore, you might be given some data and asked which distribution best fits it. For this, we need to establish the conditions for each distribution, then when faced with a question, you just pick the distribution whose conditions are satisfied.

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来源：安娜说留学