You and a friend buy two fruit smoothies and leave a tip. you split the total and your half comes to $3.60. what percent (in decimal form) did you and your friend leave if the smoothies cost $3 each?

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.