Hi i need to know a couple of things and i dont know how to get to them....thanks for taking a look over this ... Stem and leaf........ 10 |0 9 |2,4,5 8 | 1,2,7,9 7 | 1,1,3 6 | 1,2,8 5 | 1,5 Mean = 77 Mode = 71 Median = what is the mode???? I think its 80 but im not sure.... What is the Third Quartile and First Quartile of this data?? What is the variance??......How can i get the answer to this? What is the standard deviation of the scores??....Same thing as above im really lost on this ...can anyone show me how to do this??