A is a numerical characteristic of a sample and a is a numerical characteristic of a population.

A is a numerical characteristic of a sample and a is a numerical characteristic of a population. Options: (a) Sample, population (b) Population, sample (c) Statistic, parameter (d) Parameter, statistic ✅ Correct Option: (c) Statistic, parameter Explanation (200+ words): A statistic describes a numerical characteristic of a sample, while a parameter describes a numerical characteristic of a population. Statistics are used to estimate parameters. 10 PPSC-Related Facts: 1. Statistic comes from sample 2. Parameter comes from population 3. Mean can be statistic or parameter 4. Inferential statistics estimate parameters 5. Statistics are known values 6. Parameters are usually unknown 7. Symbols differ (x̄ vs μ) 8. Used in hypothesis testing 9. Central statistics concept 10. Exam favorite MCQ