Respuesta :
If blake is sampling 40 students without replacement, the minimum population size would have to be greater than "400" to treat the observations as independent.
What is independent observation?
Any data point in a group of data that also is statistically independent of the others is referred to as an independent observation.
Some features of independent observation are-
- The term "independence" refers to the fact that its value is unaffected by the validity of any additional observation in the collection.
- Independent observations also are uncorrelated, but the converse is not true: lack of correlation cannot always imply independence.
- In an A/B test, for example, observations of user-level data are typically considered independent.
- One user's purchasing revenue is unrelated to that of another.
- Even in this situation, there are specific violations of the premise, such as a single individual having multiple user accounts, or users influencing one other because they share the same physical area, or because they are colleagues, relatives, etc.
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