SAT Question a29e89fc: Distributions, Center & Spread answer and explanation with Desmos solution

The mean of a data set is the sum of the values in the data set divided by the number of values in the data set. The sum of the masses, in grams, of these alpine marmots is $4,010+4,010+3,030+4,050+3,050$, or $18,150$ grams. The number of alpine marmots in the data set is $5$. Therefore, the mean mass, in grams, of these $5$ alpine marmots is $\frac{18,150}{5}$, or $3,630$.