NO.PZ202304060100015002
问题如下：
Based on Exhibit 2, the average effective spread of the three trades is closest to:
选项：
A.$0.0333.
$0.0367.
$0.0400.
解释：
C is correct. The effective bid–ask spread for buy orders is calculated as: Effective bid–ask spread (buy order) = 2 × {Trade price – [(Ask price + Bid price) / 2)]}
- Effective spread of Trade 1 = 2 × {$25.20 – [($25.20 + $25.17)/2]} = $0.0300.
- Effective spread of Trade 2 = 2 × {$25.22 – [($25.22 + 25.19)/2]} = $0.0300.
- Effective spread of Trade 3 = 2 × {$25.27 – [($25.26 + $25.22)/2]} = $0.0600.
- Average effective spread = (Effective spread of Trade 1 + Effective spread of Trade 2 + Effective spread of Trade 3)/3.
- Average effective spread = ($0.0300 + $0.0300 + $0.0600)/3 = $0.0400.
老师，请问这里问Average Effective Spread是直接平均就可以了嘛？不需要加权嘛？就是用(1200*0.03+1300*0.03+2500*0.06)/5000=0.045?
