Smallmouth bass data (Data file: wblake) Compute the means and the variances for each of the eight subpopulations in the smallmouth bass data. Draw a graph of average length versus Age and compare...

Smallmouth bass data (Data file: wblake) Compute the means and the variances for each of the eight subpopulations in the smallmouth bass data. Draw a graph of average length versus Age and compare with Draw a graph of the standard deviations versus age. If the variance function is constant, then the plot of standard deviation versus Age should be a null plot. Summarize the information.