Find a newspaper article or Internet report about a study that involves two quantitative variables. Besides providing a copy of the article or report, tell how the data were produced-was it an experiment or an observational study? Which variable is explanatory and which is response? Is there a positive or negative relationship between the two variables? Does the report suggest that the relationship is strong or weak? Tell if results are being reported for a sample or for an entire population, and the number of individuals studied, if known. Tell if there is reason to suspect bias that arises if the sample is not representative, or bias in the design for assessing the variables' values.