Question

determine whether the given value is a statistic or a parameter. a homeowner measured the voltage supplied to his home on 23 days of a given month, and the average (mean) value is 147.2 volts. choose the correct answer below. a. the given value is a parameter for the month because the data collected represent a population. b. the given value is a statistic for the month because the data collected represent a population. c. the given value is a statistic for the month because the data collected represent a sample. d. the given value is a parameter for the month because the data collected represent a sample.

Explanation:

A parameter describes a population, while a statistic describes a sample. The homeowner measured the voltage on 23 days (a subset of all days in the month), so the data is a sample. The mean value calculated from this sample data is a statistic.

Answer:

C. The given value is a statistic for the month because the data collected represent a sample.