## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

No credit card required

# Confidence Intervals for the Mean with Large Samples

So let’s learn how to construct a confidence interval for a population mean using a large sample size. By a large sample size, we are generally referring to n ≥ 30. The first step in developing a confidence interval for a population involves the following discussion on estimators.

## Estimators

The simplest estimate of a population is the point estimate, the most common being the sample mean. A point estimate is a single value that best describes the population of interest. Let me explain this concept by using the following example.
I think my wife has been kidnapped and secretly replaced by a Debbie look-alike who also happens to be completely addicted to the QVC home shopping channel. ...

## With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

No credit card required