Sex;Social class;Average number;Total BOTH SEXES;Total;Average;4.57 BOTH SEXES;Total;Standard deviation;4.23 BOTH SEXES;I;Average;3.45 BOTH SEXES;I;Standard deviation;3.59 BOTH SEXES;II;Average;3.74 BOTH SEXES;II;Standard deviation;3.56 BOTH SEXES;III;Average;4.18 BOTH SEXES;III;Standard deviation;4.11 BOTH SEXES;IV;Average;4.55 BOTH SEXES;IV;Standard deviation;4.30 BOTH SEXES;V;Average;4.79 BOTH SEXES;V;Standard deviation;4.27 BOTH SEXES;VI;Average;5.27 BOTH SEXES;VI;Standard deviation;4.50 BOTH SEXES;No data recorded;Average;5.35 BOTH SEXES;No data recorded;Standard deviation;4.36 MALES;Total;Average;4.63 MALES;Total;Standard deviation;4.32 MALES;I;Average;3.54 MALES;I;Standard deviation;3.04 MALES;II;Average;2.60 MALES;II;Standard deviation;2.42 MALES;III;Average;4.34 MALES;III;Standard deviation;4.29 MALES;IV;Average;4.66 MALES;IV;Standard deviation;4.51 MALES;V;Average;4.78 MALES;V;Standard deviation;4.25 MALES;VI;Average;5.91 MALES;VI;Standard deviation;4.86 MALES;No data recorded;Average;. MALES;No data recorded;Standard deviation;. FEMALES;Total;Average;4.54 FEMALES;Total;Standard deviation;4.18 FEMALES;I;Average;3.41 FEMALES;I;Standard deviation;3.79 FEMALES;II;Average;4.39 FEMALES;II;Standard deviation;3.93 FEMALES;III;Average;4.10 FEMALES;III;Standard deviation;4.01 FEMALES;IV;Average;4.43 FEMALES;IV;Standard deviation;4.08 FEMALES;V;Average;4.80 FEMALES;V;Standard deviation;4.29 FEMALES;VI;Average;4.98 FEMALES;VI;Standard deviation;4.29 FEMALES;No data recorded;Average;5.36 FEMALES;No data recorded;Standard deviation;4.32