on (All Things Algebra), 2015 20 The data below represents the number of hours spent watching TV each week by a group of 15 people. If the mean is 14 and the standard deviation is 5.3, how many data values fall within one standard deviation of the mean? (6, 7, 8, 8, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 23}