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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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work out the following formula for the simple linear regression from the corresponding formula given in matrix terms

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A multiple-choice exam has four possible answers for each question. For each correct answer, you are awarded 5 points. For each incorrect answer, 2 points are subtracted from your score. For answers left blank, no points are added or subtracted. (a) If you do not know the correct answer to a particular question, is it to your advantage to guess? Explain. (b) If you do not know the correct answer but can eliminate one possible choice, is it to your advantage to guess? Explain.

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