Question: When calculating variance so far we have been dividing the sum of square by N. In this module, we introduced the idea of estimating variance

When calculating variance so far we have been dividing the sum of square by N. In this module, we introduced the idea of estimating variance from a sample and now use N-1. In your own words answer the following: What is the difference between dividing by N and dividing by N-1? What is each method specifically calculating? Given an example of when we should use each method

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