tailieunhanh - Ebook The essentials of statistics - A tool for social research (2nd edition): Part 1

(BQ) Part 1 book "The essentials of statistics - A tool for social research" has contents: Introduction; basic descriptive statistics - percentages, ratios and rates, frequency distributions; charts and graphs; measures of central tendency,.and other contents. | FREQUENTLY USED FORMULAS CHAPTER 2 Standard deviation of the sampling distribution for sample means Proportion _ x − x = — — f p = __ N ͙ ( ) N2 − 1 Standard deviation of the sampling distribution for sample proportions CHAPTER 4 Mean _ p − p = ͙Pu(1 − Pu ) ∑(Xi ) N __ ͙(N1 + N2 )/N1N2 Proportions CHAPTER 5 Standard deviation __ — ∑(X − X )2 ͙ N1 − 1 N1Ps1 + N2Ps2 Pu = N1 + N2 f % = __ × 100 N s= 2 Pooled estimate of population proportion Percentage — X= 2 s1 s2 _ + _ (Ps1 − Ps2 ) Z(obtained) = _ p − p CHAPTER 10 i __ N Total sum of squares CHAPTER 6 SST = Z scores — Xi − X Z = _ s — ∑X 2 − N X 2 Sum of squares between SSB = CHAPTER 7 — — ∑N k( X k − X ) 2 Confidence interval for a sample mean Sum of squares within s — . = X Ϯ Z __ ͙N Ϫ 1 SSW = SST − SSB Confidence interval for a sample proportion Degrees of freedom for SSW _ . = Ps ± Z ͙ P (1 − P ) N u u _ dfw = N − k Degrees of freedom for SSB CHAPTER 8 Means dfb = k − 1 —− X Z(obtained) = _ s/͙N − 1 Mean square within Proportions Ps − Pu Z(obtained) = __ ͙Pu(1 + Pu )/N CHAPTER 9 SSW MSW = _ dfw Mean square between SSB MSB = _ dfb F ratio Means — (X — −X ) 1 2 Z(obtained) = __ σ — — x −x MSB F = __ MSW (continued on inside back cover) The Essentials of STATISTICS A Tool for Social Research Second Edition Joseph F. Healey Christopher Newport University Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States The Essentials of Statistics: A Tool for Social Research, Second Edition Joseph F. Healey Acquisitions Editor: Chris Caldeira Assistant Editor: Erin Parkins Editorial Assistant: Rachael Krapf Technology Project Manager: Lauren Keyes Marketing Manager: Kim Russell Marketing Assistant: Jillian Myers Marketing