What is the difference between a parameter and a statistic? A parameter is a numerical measurement describing data from a sample. A statistic is a numerical measurement describing data from a population. OA parameter is an aspect of an individual subject or object being measured. A statistic is a numerical measurement describing data from a sample. OA parameter is a numerical measurement describing data from a population. A statistic is an aspect of an individual subject or object being measured. O A parameter is a numerical measurement describing data from a sample. A statistic is an aspect of an individual subject or object being measured. A parameter is a numerical measurement describing data from a population. A statistic is a numerical measurement describing data from a sample. O A parameter is an aspect of an individual subject or object being measured. A statistic is a numerical measurement describing data from a population.