solve for the mean, median, mode, quantile, percentile and variance

Score Formula: 18 - 23 3 Efx (Efa 24 - 29 Ef or x = AM + i Ef 8 30 - 35 12 * = lb; + i 5- of 36 - 41 7 42 - 47 9 d1 48 - 53 3 & = lb; til + dz Total 42 Qq = lbog + i an - of fQa P Pp = Ibp +1 10oh - of fpp $2 - 2[f(x - x)= ] or $2 - nEfx2 - (Efx) n - 1 n(n - 1) $2 = 12 n Ef(d')2 -(fd)=] n(n - 1) Find the following: 1. mean 2. median 3. mode 4. Third Quartile (Q3) 5. 25th Percentile ( P25 ) 6. Variance