â–º a) A population parameter is only based on conceptual measurements, but a sample statistic is based on a combination of real and conceptual measurements.

â–º b) A sample statistic changes each time you try to measure it, but a population parameter Remains fixed

â–º c) A population parameter changes each time you try to measure it, but a sample statistic remains fixed across samples

â–º d) The true value of a sample statistic can never be known but the true value of a population parameter can be known.

Answer - b