[計量] 請教 PP2 test1 一題圖表題
PP2 test one 有一題計量的圖表題
借一下"whereright (需要放空...)"網友的圖
http://photo.xuite.net/happyeverydaay/5218184/1.jpg
第三題中問到
If each of the average rating was the arimetic mean of rating given by
the 100 travel agents, approximately how much greater was total of the ratings
given to all three airlines for reliability than that for promptness?
A)25 B)50 C)125 D)250 E)500
可以請問一下這題在問什麼嗎?
要怎麼算?
非常感謝
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推
10/28 16:09, , 1F
10/28 16:09, 1F
→
10/28 16:09, , 2F
10/28 16:09, 2F
→
10/28 16:10, , 3F
10/28 16:10, 3F
→
10/28 16:29, , 4F
10/28 16:29, 4F
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