Martha spent $38.45 on a new shirt and now has $17.71 in her pocket.

which equation can be used to find how much money, x, she had in her pocket before buying the shirt?

x−38.45=17.71

x + 17.71 = 38.45

17.71x = 38.45

x + 38.45 = 17.71

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.