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Ppt Chapter 1 Introduction To Statistics And Data Collection This document provides notes on bus 211 that summarize key concepts across 7 chapters: 1) it defines categorical and numerical variables and discusses presenting data in tables and charts like histograms, polygons, and scatter plots. 2) it covers numerical descriptive measures such as mean, median, mode, and standard deviation. 3) it introduces concepts of basic probability like joint. Chapter 1 data collection section 1.1 introduction to the practice of statistics objectives define statistics and statistical thinking explain the process of statistics distinguish between qualitative and quantitative variables.