When you are comparing two sets of data, and one set is strongly skewed and the other is symmetric, which measures of the center and variation should you choose for the comparison? choose the correct answer below. a. the medians and interquartile ranges b. the median and interquartile range for the skewed group and the mean and standard deviation for the symmetric group c. the means and standard deviations d. the mean and standard deviation for the skewed group and the median and interquartile range for the symmetric group