A set of data has the following values: 47, 34, 39, 25, 32, 17, 45, 50, 62, 64, 48, 54, 39, 22, 42, 17, 47, 34, 67. Calculate the median, range, mode, and mean.

There are $n = 19$ data points.

The median is the $\frac{n+1}{2}$-th value.

The $10^{th}$ value in the ordered list is 42.
The median is $\boxed{\text{42}}$.

The range is $\boxed{\text{50}}$, which confirms the statement that the range is 50%.

The values 17, 34, 39, and 47 all appear 2 times, which is the highest frequency.
The mode is $\boxed{\text{17, 34, 39, 47}}$.

The mean is $\boxed{\text{44.16}}$.

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