Please post an answer to the following; 1) Why is the standard deviation preferable to range as a measure of variation? (+2) 2) Identify an advantage that the median and interquartile range have over the mean and standard deviation, respectively. (+2) 3) When looking at a boxplot, how do you determine if the data is symmetric, left skewed, or right skewed? (+3) 4) Regarding the interquartile range, what does it measure? (+2)