Paper 2 · November 2018 · Hypothesis Testing

Which statement correctly distinguishes a statistic from a parameter?

AA statistic is calculated from a sample, while a parameter describes the whole population.

BA statistic describes the whole population, while a parameter is calculated from a sample.

CA statistic and a parameter are both calculated only from sample data.

DA parameter changes with every new sample taken, while a statistic stays fixed.

Explanation

A statistic is a numerical value computed from sample data, used to estimate the corresponding population characteristic, which is called a parameter.

Derived from ZIMSEC Statistics Paper 2, November 2018, Q10

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