This dot plot is symmetric, and the data set has no extreme values.

What is the best measure of center for this dot plot?
A. The interquartile range (IQR)
B. Either the mean or the median
C. The smallest value
D. The mean absolute deviation (MAD)

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?