Harmonic mean of $$$17$$$, $$$25$$$

Find the harmonic mean of $$$17$$$, $$$25$$$.

The harmonic mean of data is given by the formula $$$H = \frac{n}{\sum_{i=1}^{n} \frac{1}{x_{i}}}$$$, 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 sum of the reciprocals of the values is $$$\frac{1}{17} + \frac{1}{25} = \frac{42}{425}$$$.

Therefore, the harmonic mean is $$$H = \frac{2}{\frac{42}{425}} = \frac{425}{21}$$$.

The harmonic mean is $$$\frac{425}{21}\approx 20.238095238095238$$$A.