This includes stating the question to be addressed and stating the hypothesis. Students can explain the need for control, randomness, and replication in experimentation. Students can draw the geometric design space graphically and represent the effect the predictor variable has on the response variable as a vector. Students can evaluate significance using graphical methods.
Students can calculate a linear predictor equation and test for adequacy.
To see a Quick Time Movie of the Crater Experiment, Click the above image. File size may be large, please allow enough time for the download. This experiment is given context by having students do research on the Internet about how craters are formed and giving oral reports on their research. The experiment is to study the size of the crater formed by dropping a ball-bearing when the height is varied between two levels. Students become familiar with terms like predictor and response variable, predictor equations, geometric design space, slope, y intercept, hypotheses, and center points.