The sophomore class needs a combined total of 216 medium and large t-shirts for field day. the number of medium t-shirts needed is three times the number of large t-shirt needed. what is the number of medium t-shirts needed.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.