The business owner uses the median and IQR to determine the center and variability of the data sets. Which best describes the comparison? The comparison would be more accurate using the mean and MAD because one of the graphs is symmetric. The comparison would be more accurate using the mean and MAD because the median of both data sets is the same. The comparison using median and IQR is best because one of the graphs is not symmetrical. The comparison using median and IQR is best because the median is greater than the IQR for both data sets.

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?