The file Protein contains calorie and cholesterol information for popular protein foods (fresh red meats, poultry, and fish) compiled by the U.S. Department of Agriculture.

a. Perform a cluster analysis using the complete linkage method on the protein foods based on the calories and cholesterol, in grams.

b. What conclusions can you reach about which protein foods are most similar?

c. Perform a cluster analysis using Ward's method on the protein foods based on the calories and cholesterol in grams.

d. What conclusions can you reach about which protein foods are most similar?

e. Compare the results of (a) and (c). Are there any differences in your conclusions? Explain