Margin of error

High school (ages 12+)
Mathematics & Numbers

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/margin-of-error

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the statistical purpose?Measures the amount of random sampling error in survey or study results
2. What is the core components?Involves confidence level, sample size, and data variability
3. Why does a bigger margin of error mean we are less sure?A larger margin means the guess could be farther from the true value, so we have less confidence that the sample shows the whole group.
4. How does the size of the sample affect the margin of error?A bigger sample gives a smaller margin of error, making the estimate more accurate.

Inferential Statistics: Using data from a sample to make educated guesses about a larger population.
Confidence Interval: A range of values likely to contain a population parameter, with a specified probability.
Population Parameter: A numerical characteristic of an entire population, such as the average height or percentage of voters.