Question: Q1: Every 10 years, the US government performs a census, in which they survey EVERY household in the country and ask them for their race,

Q1: Every 10 years, the US government performs a census, in which they survey EVERY household in the country and ask them for their race, income, age, etc. Then, they measure the mean income, proportions of each race, etc. Is this an example of gathering parameters or gathering statistics? How do you know?

Q2: WHY are sampling distributions more precise with higher sample sizes?

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