Level 2: Informally describe the contribution of one or more sources of variability to variability observed in the system.
2A
Informally estimate the magnitude of variation due to one or more sources.
"The amount of water makes a lot of difference in how tall the plants grow but where we put them in the pot doesn't matter as much."
"The error due to gaps and laps is more than the error due to misreading the ruler."
Lessons
6 Modeling Measurements