101C_W4_L1_DZ.pdf - 101C ADMIN STUFF 101C IMPORTANT STUFF ▸ Read the syllabus(on CCLE ▸ Office Hours Thursday 5:00-6:00pm ▸ Midterm in class

# 101C_W4_L1_DZ.pdf - 101C ADMIN STUFF 101C IMPORTANT STUFF...

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101C IMPORTANT STUFF Read the syllabus (on CCLE) Office Hours: Thursday 5:00-6:00pm Midterm in class: November 12 Final: Private Kaggle Data Challenge Send all academic questions to Piazza, not email. Feel free to answer/participate in discussions.
4 101C

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101C WHAT IS THE POINT? INFERENCE (USUALLY) Sample A Data Set Some Population The Actual Inferential Population Some mechanism of selection or subsetting results in … Informs us about …
101C WHAT IS THE POINT? INFERENCE (USUALLY) Considering the mechanism that was used to subset the sample, or data set from the larger population . . . A purely random method of sampling is usually regarded as implying that the larger population from which the sample was obtained is equivalent — or at least a proxy for — the actual inferential population.

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101C WHAT IS THE POINT? INFERENCE (USUALLY) Sample A Data Set Some Population The Actual Inferential Population Some mechanism of selection or subsetting results in … Informs us about …
101C WHAT IS THE POINT? INFERENCE (USUALLY) In probability theory, this concept is sometimes talked about in terms of “exchangeability”. In stats circles, we talk in terms of “representativeness”.

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101C WHAT IS THE POINT? INFERENCE (USUALLY) Sample A Data Set Some Population The Actual Inferential Population Some mechanism of selection or subsetting results in … Informs us about …
101C WHAT IS THE POINT? INFERENCE (USUALLY) Perhaps the most common response when the data are not generated by random sampling is to proceed as if the data on hand were a random sample from an imaginary population. . . . such populations are sometimes called “superpopulations” (because the data can be considered a population). A superpopulation is defined in a somewhat circular way as the population from which the data would have come if the data were a random sample.

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