What two statistical values are used to calculate the standard error of the mean?

Standard deviation and sample size

Why is it important to include error bars, calculated using the standard error of the mean, on a bar graph representing data?

Error bars show the precision and variability of the data around the mean, providing more information than just the average value.

Name: Calculating Standard Error of the Mean
Author: Insta~Lesson

12th Grade · Math · 20 min

I can calculate the standard error of the mean to estimate the precision of a sample mean.

1
Standard error is a statistic that indicates the precision of your data.
2
Standard error is calculated by dividing the standard deviation by the square root of the sample size.
3
A smaller standard error indicates more precise data, while a larger standard error suggests less precise data.

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