se the DDT data set which records measurements on 144 fish caught on the Tennessee river and its tributaries: 2. Plot the boxplot of the DDT variable using whiskers extending as far as 3 Interquartile ranges 3. Using the boxplot() function in R find the outliers: Hint: Use the list output from the function 4. Using the boxplot method find the possible outliers: Hint: setdiff() might be useful though not absolutely necessary 5. Use the z technique to find outliers -- what are they? 6. What deficiency do you see in the use of z to find outliers