Accuracy vs Precision | What is the Difference Between Accuracy and Precision?

Accuracy vs Precision | What is the Difference Between Accuracy and Precision?

What is the Difference Between Accuracy and Precision?

→ The difference between Accuracy and precision are explained below with various examples, Accuracy and precision are a similar-looking word but has a difference.


➤ Accuracy:

→ The Accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's actual (true) value.
→ Accuracy is how close a measured value is to the actual (true) value.

➤ Precision:

→ The Precision of a measurement system is the degree to which repeated measurements under unchanged conditions show the same results.
→ Precision is how close the measured values are to each other.
→ Precision in MSA (Measurement System Analysis) is related to Repeatability and Reproducibility

Four Possibility of the measurement system - Accuracy vs precision

→ Case 1: A measurement system has poor precision and poor accuracy
→ Case 2: A measurement system has good precision and poor accuracy
→ Similarly Case 3: A measurement system has poor precision and good accuracy
→ Then Case 4: A measurement system has good precision and good accuracy


Four Possibility of the measurement system - Accuracy vs precision