# Confidence Interval Calculator

## What is the confidence interval?

The range of values that are most likely to reflect the actual population parameter is described by the confidence interval. The reliability of the statistic is gauged by the breadth of the confidence interval.

If a brick maker understands how to build bricks and knows how many bricks to use, they can produce bricks of the correct size.

He determined the typical mass of 100 bricks used as a sample. They weigh the same as 3 kg.

The 95 percent confidence interval, according to his calculations, is between 2.85 kg and 3.15 kg.

The average mass of all the bricks he produces will fall between 2.85 kg and 3.15 kg, he may be 95% certain.

You sometimes simply want to be 95% certain. Whether you need 99% certainty or only the knowledge that 90% of the time, the confidence interval is accurate, is up to you.

The confidence level in this instance is known as this %.

## What is a Confidence Level?

At a confidence level, such as 95%, 95 percent confidence intervals are created.

The confidence level is a gauge of the researcher's degree of assurance about the study's results.

However, what does a 95% confidence level mean?

If a confidence level is 95%, then estimations of a parameter would be produced each time the same population was sampled, and the resultant intervals would be 95%.

## How to Use the Confidence Interval Calculator?

The confidence interval calculator should be used as follows:

Step 1: Fill in the appropriate input fields for the sample size, standard deviation, and mean, then choose the degree of confidence.

Step 2: To get the interval value result, click the "Calculate" button now.

Step 3: The confidence interval will then be shown.