Answer:
Mean
Explanation:
The mean of a series of measurements is calculated when a<em>ll the measurements are added up and then divided by the number of measurements taken</em>, as follows:
- Sum of Measurements = 20.73 + 20.76 + 20.68 + 20.75 = 82.92
As<u> there are 4 measurements</u>, the mean is:
This allows us to visually see the structure of the atoms/ molecules so we can get a better understanding of what they look like.
I think the answer is a, volume, but I still might be wrong.