What is the first step in solving the quadratic equation x2 = ? take the square root of both sides of the equation. add to both sides of the equation. square both sides of the equation. subtract from both sides of the equation.

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.