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From page 1...
... 1 Introduction Developing Effective Experiment Designs and Data Analysis Plans Personnel in state departments of transportation (DOTs) , county road commissions, and other transportation agencies often engage in evaluations of different products or want to know whether a treatment has resulted in an improvement in their system, such as whether some crack sealer is better than the one that was used in the past or whether changing signs on a number of horizontal curves really led to a crash reduction.
From page 2...
... 2 effective experiment Design and Data analysis in transportation research Organization of the Guide This report has three chapters. Chapter 2 focuses on how to get organized, ask questions, develop an experiment design, and understand how an appropriate statistical technique/ approach is selected.

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