(Solved): Please explain why it is the correct answer  (2pt.) During a field experiment, ammonium conce ...

Please explain why it is the correct answer 

(2pt.) During a field experiment, ammonium concentrations \( (\mathrm{mg} / \mathrm{L}) \) in groundwater were measured at alluvial wells. The estimated mean concentration was \( 0.27 \mathrm{mg} / \mathrm{L} \), while the median was \( 0.44 \mathrm{mg} / \mathrm{L} \). If a histogram of these measurements was constructed, i. It would be skewed to the right ii. It would be skewed to the left iii. It would be approximately symmetric iv. Its shape could not be determined without knowing the relative frequencies.