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AP Statistics Midterm Study Guide Classify the variable as categorical or quantitative. (2) Analyze categorical data display. Find the mean. Identify outliers. Describe a simulation. Interpret the meaning of the coefficient of determination. Draw a conclusion from the graph of the regression equation. Use a regression model to make a prediction. Predict y using a re-expressed model. Identify a sampling technique. Determine the type of observational study represented. Solve problems using probability. (2) Use the inverse normal and normalcdf functions in your graphing calculator. Find a quartile. Define bimodal. Find probability from contingency tables. Explain the meaning of least squares. Determine if correlation is appropriate. Find the median. Use the model to make a prediction. Determine the appropriate measure of center.