SDCAR2010【逻辑入门】（八）Assumptions

AlohaDJ

My answer for the U.S. census problem: C

I guess the "the basic statistical portrait" means the proportion of each group to the entire population, or something close...

-- by 会员 perain (2011/6/29 9:56:04)

Right again. You are on a roll.

-- by 会员 sdcar2010 (2011/6/29 10:56:15)

NN, could u plz give a little more light on "the basic statistical portrait"?

It means the proportion of each group to the entire population, or something close...How can we get it? another common sense??

THKS!

srosalita

children who don't spend all of their after-school hours playing computer games DO NOT spend at least some of that time talking with other people

-- by 会员 sdcar2010 (2011/7/21 20:24:36)

THX!

sdcar2010

My answer for the U.S. census problem: C

I guess the "the basic statistical portrait" means the proportion of each group to the entire population, or something close...

-- by 会员 perain (2011/6/29 9:56:04)

Right again. You are on a roll.

-- by 会员 sdcar2010 (2011/6/29 10:56:15)

NN, could u plz give a little more light on "the basic statistical portrait"?

It means the proportion of each group to the entire population, or something close...How can we get it? another common sense??

THKS!

-- by 会员 AlohaDJ (2011/7/22 0:44:22)

Good question. The basic statistical portrait might mean a statistical trend, a statistical discription, a statistical map.

AlohaDJ

Good question. The basic statistical portrait might mean a statistical trend, a statistical discription, a statistical map.

-- by 会员 sdcar2010 (2011/7/22 11:45:03)

THKS a lot!

三仙包

太精彩啦~~~不甚感激~~！！牛牛~~爱死你了！！

mia113

up up up up !!!!!!!!!!!!!!!!!!

mia113

For question 9`
When I took the exercise, I thought C was irrelevant, so I eliminated it withoout thinking carefully.

I think the premises of question 9 are:  TV sales in B don't change,  TV assembled in B decrease
conclusion: B import more TV from C

negate AD can make the conclusion fall apart.
why these mistakes took place?
Could you please tell me how to tell the relevant and irrelevant options. Thanke you``

feifan1984

跟看美剧一样追楼主的帖子...

mia113

今天重新看了9题·
发现当时把
assemblers看成了assembled了··
文章的推理： assemblers in B decrease  --> television imported from V increased
中间有个gap: drop in assembler -->drop in television asselbed in B which is related to the efficiency of the assemblers

仔细想想当时自己错的原因是认为 B地卖的TV不变· TV assembled in B decrease （当时的想法，后来证实是错的）， tv imported from V increase
自己当时觉得有个gap: B的减少，不能推出 减少量就是来自V 心想如果可以找到能够证明 B的减少就是V增加的就可以补全这个GAP  
但是后来看LZ在问答别人问题时·有一点 ："These TV's come from both B and V"
请问下楼主通过看文章 是怎么得出这个隐含条件的吖？

觉得自己有时候 分不清 怎么是反驳了premise，反驳推理链，weaken evidence
希望能够得到您的解答··谢谢了·······

carrick0526

謝謝樓主的貼..我從中獲益良多
想問一下樓主給的十道題是不是都是找出necessary assumption?而不是sufficient assumption?