Statistics for Business and Economics Plus NEW MyLab Statistics with Pearson eText -- Access Card Package, 12th Edition

New and Updated Features

• 30% of the exercises have been updated, with many new exercises added based on contemporary business-related studies and real data. Most of these exercises are designed to foster critical thinking skills.
• Updated technology coverage: all printouts from statistical software (Excel^® with XLSTAT^™, IBM^® SPSS^®, MINITAB^®, and the TI-84 graphing calculator) and corresponding instructions have been revised to reflect the latest versions.
• Four Statistics in Action cases are new, based on real data from recent business studies.
• Ethics remains an important topic. Where appropriate, boxed notes have been added to emphasize the importance of ethical behavior when collecting, analyzing, and interpreting data with statistics.

Content Changes

• Chapter 1 (Statistics, Data, and Statistical Thinking)—material on all basic sampling concepts (e.g., random sampling and sample survey designs) has been streamlined and moved to Section 1.6 (Collecting Data: Sampling and Related Issues).
• Chapter 2 (Methods for Describing Sets of Data)
• The section on summation notation has been moved to the appendix (Appendix A).
• Recent examples of misleading graphics have been added to Section 2.10 (Distorting the Truth with Descriptive Techniques).
• Chapter 4 (Random Variables and Probability Distributions)
• Use of technology for computing probabilities of random variables with known probability distributions (e.g., binomial, Poisson, normal and exponential distributions) has been incorporated into the relevant sections of this chapter.
• The section on approximating a binomial distribution with a normal distribution has been incorporated into Section 4.6 (The Normal Distribution).
• Chapter 5 (Sampling Distributions).
• Material on the sampling distribution of the sample mean (originally in Part III of Chapter 4) has been moved to Chapter 5. Section 5.3 covers The Sampling Distribution of the Sample Mean and the Central Limit Theorem
• Two new sections have been added: Section 5.2 (Properties of Sampling Distributions: Unbiasedness and Minimum Variance) and Section 5.4 (Sampling Distribution of the Sample Proportion).
• Chapter 6 (Inferences Based on a Single Sample: Estimation With Confidence Intervals)—an optional section (Section 6.7) on estimating a population variance has been added.
• Chapter 7 (Inferences Based on a Single Sample: Tests of Hypothesis)—the section on p-values in hypothesis testing (Section 7.3) has been moved up to emphasize the importance of their use in business-related studies. Throughout the remainder of the text, conclusions from a test of hypothesis are based on p-values.
• Chapter 10 (Categorical Data Analysis)—a subsection on contingency tables with fixed marginals as been added to Section 10.3.