Traffic headaches A study of traffic delays in 68 U.S. cities found the following relationship between total delays (in total hours lost) and mean highway speed: Is it appropriate to summarize the strength of association with a correlation? Explain.

1 STAT 145 Introduction to Statistics 1 Chapter 1 Data Collection Terms ormulas 1.1 Introduction to the Practice to Statistics Objectives: Definitions and process of statistics / Qualitative vs. Quantitative Statistical Process: Population: An entire group of people, things, or events that has at least one common trait. Sample: A smaller number of observations taken from a population Parameter: A measure obtained from