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Answer 4 questions correctly in a row.

This passage describes tusk length in African elephants.

an African elephant with an arrow indicating its tusk length

an African elephant with its tusk length shown

Many African elephants have long front teeth called tusks. Elephants with longer tusks are often better at fighting.
However, elephant tusks are the main source for a valuable material called ivory. Illegal hunters called poachers may kill elephants to get tusks for ivory. These poachers are more likely to kill elephants with longer tusks than elephants with shorter tusks.

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	58, 58, 60, 77, 78, 78, 89, 89, 91, 92
End	25, 26, 32, 49, 50, 51, 54, 57