https://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Ctext%7BMedian+%7D+%28M%29+%3D+L+%2B+%5CBig%28%C2%A0+%5Cfrac%7B%5Cfrac%7BN%7D%7B2%7D+-cf%7D%7Bf%7D%C2%A0+%5CBig%29+%5Ctimes+C+&bg=%23ffffff&fg=%23111111&s=0&c=20201002