1.70 Are there outliers in the smolt data? Refer to the previous two exercises.

1. (a) Find the IQR for the smolt data.

2. (b) Use the 1.5 × IQR rule to identify any outliers.

3. (c) Make a boxplot for the smolt data and describe the distribution using only the information in the boxplot.

4. (d) Make a modified boxplot for these data and describe the distribution using only the information in the boxplot.

5. (e) Make a stemplot for these data.

6. (f) Compare the boxplot, the modified boxplot, and the stemplot. Evaluate the advantages and disadvantages of each graphical summary for describing the distribution of the smolt reflectance data.