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How To Write A Confidence Interval

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How to get started

Step 1

Enter the sample mean, sample size, standard deviation, and confidence level into the form.

Step 2

Click 'Calculate' to generate the confidence interval.

Step 3

Review the calculated confidence interval and use it in your analysis or paper.

Main Features

Confidence Interval Calculation

Easily calculate confidence intervals using our tool. With formulas for confidence interval, 95 confidence interval formula, and more, you can determine the confidence interval quickly and accurately.

Confidence Interval Interpretation and Examples

Understand what confidence intervals mean with our detailed examples. Learn about 95 ci interval, confidence interval meaning, and how to interpret various confidence levels.

Confidence Interval Notation and Expression

Learn how to write and express confidence intervals in your papers. Our tool helps you with confidence interval notation, how to write a confidence interval statement, and how to express it in interval form.

FAQ

What is a confidence interval?

A confidence interval is a range of values that is likely to contain the population parameter with a certain level of confidence.

How do you calculate a 95% confidence interval?

To calculate a 95% confidence interval, you need the sample mean, sample size, standard deviation, and the desired confidence level. Use the formula: CI = mean ± (critical value * standard error).

What does a 95% confidence interval mean?

A 95% confidence interval means that if you were to take 100 different samples and compute a confidence interval for each sample, approximately 95 of the intervals will contain the population parameter.