A numerical value used as a summary measure for a sample, such as sample mean, is known as a a. population parameter. b. sample parameter. c. population mean. d. sample statistic

d. sample statistic

See explanation below

Step-by-step explanation:

Let's analyze one by one the possible options.

a. population parameter.

FALSE, a population parameter is a quantity that is related about an entire group or population and not for the sample

b. sample parameter.

FALSE, the sample can't be a parameter since we obtain statistics from sample and parameters from population.

c. population mean.

FALSE, the population mean is a parameter and is related to the population and not for the sample

d. sample statistic

TRUE, by definition a sample statistic is any quantity that we can derive from a sample selected from a population (some examples are the sample mean, sample deviation , sample median)

So then we can conclude that a summary value obtained from the sample is known as: sample statistic.