2011SP-I-14

Ans: (a) Median

= 62 %

, mean

= 60 %

(b) (i)

58 %

(ii)

a = 57 %

b = 63 %

Median $= 62 %$ , mean $= 60 %$ .
1. The least possible value of the median $= 58 %$ .
2. $a = 57 %$ , $b = 63 %$ .
No, I don’t agree. It is because the magazine stall may not be selected randomly.

2011SP, HKDSE-MATH, Paper 1 Statistics