If there are three different samples of the same size from a set population, is it possible to get three different values for the same statistic?

Yes

Step-by-step explanation:

Population means a collection or set of individuals or objects whose properties are to be analysed. A sample is a subset of a population. Statistic is a quantity whose numerical values can be obtained from data. Data from samples may vary from sample to sample therefore corresponding sample statistic may also vary from sample to sample.

if you mean

then it's c. 8, -7/3

but if you mean

then it is