This unique text capitalizes on a successful approach of using definitional formulas to emphasize concepts of statistics, rather than rote memorization. This conceptual approach constantly reminds students of the logic behind what they are learning. Procedures are taught verbally, numerically, and visually, which appeals to students with different learning styles. Focusing on understanding, the text emphasizes the intuitive, de-emphasizes the mathematical, and explains everything in clear, simple language. Thoroughly revised with new content, new pedagogical features, and triple the number of practice problems, this text not only teaches statistics, but prepares students to read and understand research articles.