A center for education statistics reported average mathematica achievement ...

     A center for education statistics reported average   mathematica achievement scores for eighth graders in 22 nations. the average   scores for each nation are given below       find   the 5 number summary the IQR, the mean and the standard deviation of these   national average  

     154   360   370   377   381   382   387   394   398   433   437   439   448   475   510   522   552   559   572   584   599   600