Statistical Essay On acorns and tree types

Description

This is the grading rubric Introduction Topic introduced. Gives background details about model and whether a positive or negative correlation is expected. Variables explained. Issues of cause/effect and correlation discussed. 10.0 pts This criterion is linked to a Learning Outcome Scatter Plots Scatter plots showing original data and residuals included. All graphs have axes properly scaled and labeled. General patterns in scatter plots clearly explained. 15.0 pts This criterion is linked to a Learning Outcome Hypothesis test for the parameter “beta.” Hypothesis test for the true slope of the linear model for the population is included. Formal statistical hypothesis given in terms of the parameter “beta” with a clear interpretation of the p-value. 15.0 pts This criterion is linked to a Learning Outcome Coefficient of Determination Detailed discussion of the Coefficient of Determination (r^2). How much variation in lung cancer deaths can be attributed to the amount of cigarettes sold? What variables might the unexplained variation be attributed to? 15.0 pts This criterion is linked to a Learning Outcome Discussion of Potential Sources of unreliability. Limitations of the model discussed in detail. What effect do leverage points have? Would it be reasonable to remove these points from the analysis? Reasoning explained in detail. 15.0 pts This criterion is linked to a Learning Outcome Residual Analysis Any patterns or anomalies revealed by the residual plot are identified. The possible effects of patterns or outliers on the validity of the linear model explained in detail. 10.0 pts This criterion is linked to a Learning Outcome Formatting. Essay formatted appropriately with all required sections included with tables and figures numbered and titled. Works cited page included. 10.0 pts This criterion is linked to a Learning Outcome Conclusion. Conclusion summarizes the results and discussion sections. Draws conclusions. Gives advice about future research. Makes recommendations about how results should be interpreted. 10.0 pts

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