Mean Calculator

Find the arithmetic mean of $1$, $7$, $8$, $1$, $3$, $-2$, $10$.

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 $7$ points, $n = 7$.

The sum of the values is $1 + 7 + 8 + 1 + 3 - 2 + 10 = 28$.

Therefore, the arithmetic mean is $\mu = \bar{x} = \frac{28}{7} = 4$.

The arithmetic mean is $\mu = 4$A.