As a quality inspector for an automobile manufacturer, you record the gap between adjacent side panels on several cars as follows: 6.7, 6.1, 6.2, 6.7, 6.5, 6.4, 6.3, and 6.1 millimeters. The standard deviation of these data is 0.23, and the range is 0.6.

Which measure of center is most appropriate, and what is the value of the measure of center?

mean; 6.375
median; 6.375
mean; 6.4
median; 6.6
mode; 6.7