The following is a list of 13 measurements.
79, -25, -62, -79, -91, -28, 40, 62, -46, 27, -11, -36, -65
Suppose that these 13 measurements are respectively labeled x1, x2, ..., x13. (Thus, 79 is labeled x1, -25 is labeled x2, and so on.) Compute the following.
sum_{i=1}^{13} rac{x_i}{48}
Round your answer to at least two decimal places.