The mean absolute deviation of a data set is the average distance between each data point and the mean. It gives us an idea about the variability in a data set since it is a measure of dispersion
Ok so this is pretty simple. Sullivan spent 0.18 more in November 129.53-129.35=0.18 So this wold be the first option because it is more money $129.53>129.35 Hope this helps!
