## Introductory statisticsKEY MESSAGE: Weiss Introductory Statistics, Eighth Edition, features a thorough presentation of the reasoning behind statistics, balanced with analysis and exploration of real data. This book develops statistical thinking over rote drill and practice. The Nature of Statistics; Organizing Data; Descriptive Measures; Probability Concepts; Discrete Random Variables; The Normal Distribution; The Sampling Distribution of the Sample Menu; Confidence Intervals for One Population Mean; Hypothesis Tests for One Population Mean; Inferences for Two Population Means; Inferences for Population Standard Deviations; Inferences for Population Proportions; Chi-Square Procedures; Descriptive Methods in Regression and Correlation; Inferential Methods in Regression and Correlation; Analysis of Variance (ANOVA) For all readers interested in Introductory Statistics. |

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### Contents

DESCRIPTIVE STATISTICS | 37 |

General Objectives and Chapter Outline | 89 |

General Objectives and Chapter Outline | 147 |

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### Common terms and phrases

age and price alternative hypothesis assumptions binomial boxplot chi-square Compute Concepts and Skills confidence interval confidence level critical value data provide sufficient data set denote Determine difference estimate event evidence to conclude Example Explain your answer F-curve f-distribution f-test formula frequency histogram gas mileage graph histogram hypothesis test independent samples Key Fact Kruskal-Wallis test Left-tailed Mann-Whitney test margin of error median Minitab normal probability plot null hypothesis obtain one-way ANOVA Orions outliers output P-value percentage perform a hypothesis population mean population proportion population standard deviation possible sample press ENTER Printout probability distribution procedure provide sufficient evidence random variable Refer to Exercise regression equation regression line reject H0 Right-tailed sample data sample mean sample standard deviation sampling distribution scores shown in Fig significance level simple random sampling specified standard normal curve stem-and-leaf diagram Step test statistic text box Two-tailed variable under consideration weight Wilcoxon signed-rank test z-score