Geometric mean of $$$28$$$, $$$30$$$

Find the geometric mean of $$$28$$$, $$$30$$$.

The geometric mean of data is given by the formula $$$\left(\prod_{i=1}^{n} x_{i}\right)^{\frac{1}{n}}$$$, where $$$n$$$ is the number of values and $$$x_i, i=\overline{1..n}$$$ are the values themselves.

Since we have $$$2$$$ points, $$$n = 2$$$.

The product of the values is $$$\left(28\right)\cdot \left(30\right) = 840$$$.

Therefore, the geometric mean is $$$\sqrt{840} = 2 \sqrt{210}$$$.

The geometric mean is $$$2 \sqrt{210}\approx 28.982753492378877$$$A.