In a series of 10 random 1m squared quadrats a class found the following numbers of dandelions 6, 3, 7, 8, 4, 6, 5, 7, 9, 8. Determine the mean density of dandelions per m squared on the school field, the median value, and the mode from the data.

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.