The table below describes a possible population of African elephants at the start of a period of time and at the end of that period. The table shows tusk length measurements for a representative sample of the population at the start and for another representative sample at the end. Complete the table.
Data from representative samples of a population of African elephants
Point in time List of tusk length measurements (cm) Average tusk length (cm)
Start 98.2, 98.4, 98.7, 98.7, 98.9, 98.9, 99.7, 99.9, 98.9
End 50.7, 60.3, 60.5, 67.5, 78.0, 78.4, 79.9, 86.6, 89.9,98.2
ixl r.4 sci