# Basic Analysis I

Further prepare the Bluegill only data frame for computation of relative weights by adding a relative weight variable and reducing the data frame to only fish with lengths for which a standard weight should be computed.

- For Bluegills captured only in
**2007**…- Compute the number of observations and mean, standard deviation, and standard error of relative weight for each Gabelhouse length category.
- Determine if the mean relative weight differs among Gabelhouse length categories.
- Construct a plot, with confidence intervals and appropriate significance letters, that depict your results.

# Basic Analysis II

- Repeat the previous question for Bluegills captured only in
**2008**. - Empirically compare your results between years. Provide at least three observations from your findings and at least two plausible explanations for what you observed.