# Confidence Interval: Definition, Formula & Example

Instructions:

question 1 of 3

### The amount of uncertainty of a sample estimate, like a mean or proportion, of a population is known as the _____.

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### 2. The amount of uncertainty in a sampling method is known as the _____.

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See what you know about confidence intervals with these study materials. Answer quiz questions on topics such as the term for uncertainty in a population sample estimate and how the confidence interval is expressed.

## Quiz & Worksheet Goals

These key points will be considered:

• Uncertainty in a sampling method
• Limits of a confidence interval of 35 plus or minus 5
• Interpreting the confidence interval in a sample problem involving finding students' average weight

## Skills Practiced

• Problem solving - use acquired knowledge to solve confidence interval practice problems
• Critical thinking - apply relevant concepts to examine information about uncertainty in estimates and sampling methods in a different light
• Information recall - access the knowledge you've gained regarding how we express confidence interval