Standard error

Standard error is like a way to measure how accurate or reliable our statistics or numbers are. It's like a measure of how much our results might vary if we try the same experiment again. Imagine you're making cookies. It's like asking how much the amount of sugar in each cookie may change if you make the same recipe again. Standard error measure how much variation you might expect in the sugar amount per cookie even if you use the same recipe each time.

Related topics others have asked about:

Illustration of the central limit theorem, Margin of error, Probable error, Sample mean and sample covariance, Standard error of the median, Standard error of the weighted mean, Variance, Variance of the mean and predicted responses