exam2-review-09

# exam2-review-09 - The UNIVERSITY of NORTH CAROLINA at...

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11/4/09 review for exam 2 1 STOR 155 Introductory Statistics Review for Midterm Exam 2 The UNIVERSITY of NORTH CAROLINA at CHAPEL HILL

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11/4/09 review for exam 2 2 Midterm Exam 2 • When: Tuesday 11/10 • Where: In class • Cover: Sec. 2.3 – 2.4, 4.1 – 4.5, 5.1 – 5.2 • Format: – 30 questions (multiple choice) – closed-book, calculator needed – scantron
11/4/09 review for exam 2 3 Review of Chapter 2 • Scatterplots: interpretation. • Correlation: definition and properties. • Least-Squares Regression: – Find the regression equation, prediction and interpretation, the meaning of r 2 . • Regression diagnostics: – Residuals, outliers, influential observations, lurking variables. – Association vs. Causation

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11/4/09 review for exam 2 4 Review of Chapter 4 • Sample spaces, events, union, intersection, complement, disjoint events • Probability rules : addition, multiplication • Random variables, probability distributions, means, variances, rules for means and variances • Conditional probability, independence • Venn and tree diagrams
11/4/09 review for exam 2 5 Probability Rules • For any event A , P ( A ) = 1 - P ( not A ). • For any two events

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## This note was uploaded on 11/17/2011 for the course STOR 155 taught by Professor Andrewb.nobel during the Fall '08 term at UNC.

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exam2-review-09 - The UNIVERSITY of NORTH CAROLINA at...

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