AI engineering glossary · Probability
What is sample mean?
Sample mean: The average of the values in a sample, found by adding them and dividing by how many there are. It is itself a random variable, varying from sample to sample, and is used to estimate the population mean.
Sample mean: an example
Five delivery times 30, 35, 28, 40 and 32 minutes have sample mean 165 / 5 = 33 minutes.
Related terms
More Probability terms
- Sample space
- Sampling bias
- Sampling with replacement
- Sampling without replacement
- Simple random sample
- Simpson's paradox
- Skewness
- Standard deviation
Where you learn it
Sample mean is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.