RRB RPF RPSF SI and CONS Model Papers 2 with solutions

(a) Given numbers are 10, 7, 8, 5, 6, 8, 5, 8 and 6
Arrange in ascending order 5, 5, 6, 6, 7, 8, 8, 8, 10
Total term, n = 9 (odd)
Now,
(i) Mean $=\frac{5+5+6+6+7+8+8+8+10}{9}$ $=\frac{63}{9}=7$
(i) Median $=\left(\frac{\mathit{n}+1}{2}\right)$th term $=\left(\frac{9+1}{2}\right)$th term = 5th term = 7
(iii) Mode = 8 because of higher frequency term
∴ Mean = Median