Marcelo Fernandes St at ist ics for Business and Econom ics Download free eBooks at bookboon.com St at ist ics for Business and Econom ics © 2009 Marcelo Fernandes & Vent us Publishing ApS I SBN 978- 87- 7681- 481- Download free eBooks at bookboon.com Contents Statistics for Business and Economics Cont ent s 1.1 1.2 1.3 Introduction Gathering data Data handling Probability and statistical inference 2.1 2.2 2.3 Data description Data distribution Typical values Measures of dispersion 11 11 13 15 3.1 3.2 Basic principles of probability Set theory From set theory to probability 18 18 19 4.1 4.2 4.3 4.4 4.5 4.6 Probability distributions Random variable Random vectors and joint distributions Marginal distributions Conditional density function Independent random variables Expected value, moments, and co-moments 36 36 53 56 57 58 60 www.sylvania.com We not reinvent the wheel we reinvent light Fascinating lighting offers an ininite spectrum of possibilities: Innovative technologies and new markets provide both opportunities and challenges An environment in which your expertise is in high demand Enjoy the supportive working atmosphere within our global group and beneit from international career paths Implement sustainable ideas in close cooperation with other specialists and contribute to inluencing our future Come and join us in reinventing light every day Light is OSRAM Click on the ad to read more Download free eBooks at bookboon.com Statistics for Business and Economics Contents 4.7 4.8 Discrete distributions Continuous distributions 74 87 5.1 5.2 Random sampling Sample statistics Large-sample theory 95 99 102 6.1 6.2 Point and interval estimation Point estimation Interval estimation 107 108 121 7.1 7.2 7.3 7.4 Hypothesis testing Rejection region for sample means Size, level, and power of a test Interpreting p-values Likelihood-based tests 127 131 136 141 142 360° thinking Discover the truth at www.deloitte.ca/careers © Deloitte & Touche LLP and affiliated entities Click on the ad to read more Download free eBooks at bookboon.com