Define validity
You’re measuring what ur supposed to be measuring, depending on ur equipment and method
What is the true value?
The value u’d get in ideal conditions
What is accuracy?
Being able to get a range of answers that’s close to the true value
Anomalies and errors affect this
Define precision
When the answers r consistent and has a small standard deviation
What’s standard deviation?
The spread of the range
Define repeatability
When the same reason can repeat the experiment with the same method and get the same results
What’s reproducibility?
When a different person can follow a different method with different tools method and get similar results