In its Jan 2005 issue, Environmental Science Technology Journal of American Chemical Society (ASC) reported about a study of the reliability of

Environmental Science & Technology JournalAmerican Chemical Society (ASC)

1. Calculate correlation coefficient for each pair of dependent and independent variables. Interpret your results.
2. Is Latitude (x1) a statistically significant predictor of Arsenic Level? Test using alpha = 1%
3. Is longitude (x2) a statistically significant predictor of Arsenic Level? Test using alpha = 1%
4. Is Depth (x3) a statistically significant predictor of Arsenic Level? Test using alpha = 1%
5. Calculate coefficient of determination R2 and R2-adjusted
6. Explain the relationship between R2 and R2-adjusted of the model and interpret R2-adjusted.