[问题]agument199消费问题改如何攻击

阳光下的钥匙UID: 190706

argument199 There is a general idea that waiters and waitresses are more likely to receive larger gratuities from large groups of people.  A recent research study suggests this is not true.  The researchers examined the relationship between the size of tips in restaurants and the number of meals charged on the bill.  They found that, while most tips were around 15percent, the minimum percentage considered appropriate, people dining alone tipped consistently more(19 percent) and those dining in groups of four or more tipped considerably less(13 percent)that this 15 percent standard.  These results strongly suggest that people dining in a group are less likely to feel personally responsible for leaving an adequate or generous tip.

不怕开水烫的猪UID: 187893

1 The author tells nothing about how the research is conducted. If the sample of research is too small, it will not represent the all the consumers.

2 The total amount of money spent by a group is much larger than the total cost of dining alone. Thus, it is possible that 13% of the former is still larger than 19% of the latter.

感觉这道题可攻击的点很少

flyingwindUID: 189320

没考虑3个人和2个人的group吃饭？

阳光下的钥匙UID: 190706

谢谢大家

easyflyUID: 190120

在哪里做的调查，是否有代表性
做调查的人是那些人那，是否有代表性
做调查的地方是否有代表性？

阳光下的钥匙UID: 190706

恩，可以用be representative of的句型