question 2 and 3

3. Determine the mean, standard deviation, and variance for the following samples. a) Scores on a data management quiz (out of 10 with a bonus question): 5 6 5 10 8 11 7 7 6 9 5 8 b) Costs for books purchased including taxes (in dollars): 12.55 15.31 21.98 45.35 19.81 33.89 29.53 30.19 38.202. Communication Determine which measure of central tendency is most appropriate for each of the following sets of data. Justify your choice in each case. a) baseball cap sizes b) standardized test scores for 2000 students c) final grades for a class of 18 students d) lifetimes of mass-produced items, such as batteries or light bulbs