Which is the best estimate for the average rate of change for the quadratic function graph on the interval 4 ≤ x ≤ 8?

the answer can range from 4 to 8,but the best estimate would probably be 6!   hope this !

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.