Need with some portfolio question 30 point! 3.the mean rounded to the nearest tenth of the following data set is: 15,16,17,23,11,19,20,15,18,22,15,19 4.the mode of the following data set is: 15,16,1723,11,19,20,15,18,22,15,19 5.the median(rounded to the nearest tenth if needed) of the following data set: 15,16,17,23,11,19,20,15,18,22,15 6.the first quartile(rounded to the nearest tenth) of the following data set is: 15,16,17,23,11,19,20,15,18,22,15