Which of the following symbols represents the mean of the population?

• A. $\sigma$
• B. $n$
• C. $\bar{x}$
• D. $\mu$

Answer: (D)

Verified step by step guidance

1. Understand that in statistics, different symbols represent different parameters or statistics related to populations and samples.
2. Recognize that \( \mu \) (the Greek letter mu) is the symbol used to denote the mean of a population, which is the average of all values in the entire population.
3. Know that \( \sigma \) represents the population standard deviation, which measures the spread or variability of the population data.
4. Identify that \( n \) is the sample size, or the number of observations in a sample, not a measure of central tendency.
5. Recall that \( \overline{x} \) (x-bar) represents the mean of a sample, which is an estimate of the population mean \( \mu \).