1. The Scientific Method
Part 3

2. Accuracy and Precision
Let’s watch a video!

3. Accuracy vs. Precision
Accuracy
Precision
How close a measured value is to the actual or known value.
Ex: If you measure something to be 4.6kg, but it’s known mass is 9kg, your measurement is not accurate.
How close measured values are to one another.
Ex: If you measure something to be exactly 4.6kg four times in a row, your measurement is precise, because the measurements were the same each time you repeated it.

4. -Low Accuracy
-High Precision
-High Accuracy
-Low Precision
-High Accuracy
-High Precision

5. Outliers
These are numbers that are far away from the others in a data set.
They will only happen in experiments where there are multiple trials.
They can affect the conclusion or may sometimes be excluded from the data set.