The authors stress that graphical techniques are powerful analytic tools. To illustrate this point, the following techniques are presented in the context of regression analysis: a) stem-and-leaf plots; b) schematic plots; c) time-order plots; d) scatterplots; and e) probability plots. According to the authors, it is important that analysis be tailored to the data in instruction. This provides learners with opportunities to see that real life data analysis has its unique aspects and problems. To illustrate this point, the authors used data about "Old Faithful" in Yellowstone Park. Various plotting techniques were used in order to detect anomalies and to outline causes. This process allowed the researchers to determine the appropriate model for the data- autoregressive model.
The CAUSE Research Group is supported in part by a member initiative grant from the American Statistical Association’s Section on Statistics and Data Science Education