Statistics: Sample vs. Population Mean

In statistics, what does the term "population" refer to?

• A small group of individuals chosen for a study.

• The entire group of individuals or objects that a researcher is interested in.

• A collection of data points from an experiment.

• The average value of a dataset.

What is a "sample" in the context of statistics?

• A single data point collected during research.

• A subset or smaller group selected from a larger population.

• The total number of items in a dataset.

• A type of graph used to display data.

In statistics, which symbol is typically used to represent the population mean?

• x̄ (x-bar)

• μ (mu)

• σ (sigma)

• n

Which symbol is commonly used to denote the sample mean?

• μ (mu)

• x̄ (x-bar)

• N

• Σ (capital sigma)