The heights of the 11 members of the Anvils are denoted by \(x\) cm. It is given that \(\Sigma x = 1923\) and \(\Sigma x^2 = 337221\). The Anvils are joined by 3 new members whose heights are 166 cm, 172 cm and 182 cm. Find the standard deviation of the heights of all 14 members of the Anvils.