Arithmetic mean of $4$, $6$, $1$, $2$, $3$

Find the arithmetic mean of $4$, $6$, $1$, $2$, $3$.

The arithmetic mean of data is given by the formula $\mu = \bar{x} = \frac{\sum_{i=1}^{n} x_{i}}{n}$, where $n$ is the number of values and $x_i, i=\overline{1..n}$ are the values themselves.

Since we have $5$ points, $n = 5$.

The sum of the values is $4 + 6 + 1 + 2 + 3 = 16$.

Therefore, the arithmetic mean is $\mu = \bar{x} = \frac{16}{5}$.

The arithmetic mean is $\mu = \frac{16}{5} = 3.2$A.