### Loss function

The Loss function **computes the error for a single** training **example**.

### Cost function

The Cost function **is the average of the Loss functions** of the entire training set.

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## References

- Coursera. 2020.
*Logistic Regression Cost Function – Neural Networks Basics | Coursera*. [online] Available at: <https://www.coursera.org/learn/neural-networks-deep-learning/lecture/yWaRd/logistic-regression-cost-function> [Accessed 11 May 2020].