If x represents a number, then write an expression for a number that is three more than the number

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.

my guess would be b and d, but i didn’t actually get out the pen and paper. lol