一亩三分地论坛

 找回密码
 获取更多干货,去instant注册!

扫码关注一亩三分地公众号
查看: 807|回复: 4
收起左侧

[面试] NCSU analytic面经

[复制链接] |试试Instant~ |关注本帖
wwy 发表于 2014-2-12 03:54:18 | 显示全部楼层 |阅读模式

注册一亩三分地论坛,查看更多干货!

您需要 登录 才可以下载或查看,没有帐号?获取更多干货,去instant注册!

x
一共五个人来面,有faculty,coordinator,不同背景的人。.鏈枃鍘熷垱鑷1point3acres璁哄潧
behavior: 问为啥申请analytic,对analytic有什么认识。
Technical:问linear regression。非术语解释linear regression。
问你对这个program有什么contribution。(楼主说自己会找个工作,不会拖累他们的placement,实在想不出来其他的。。。把他们都逗乐了)
问你对这个program有什么问题。
面试总共12分钟左右,非常快。楼主面试前准备了一些统计term的解释,分享一下给大家参考吧。给自己攒RP。
Linear regression: an approach to modelingthe relationship between a scalar dependent variable y and one or moreexplanatory variable x.
P-value: the probability ofobtaining a test statistic at least as extreme as the one that was actuallyobserved, assuming the null hypothesis is true. Aresearcher will often reject the null hypothesis when the P-value turns out tobe less than a certain significance level.
Type I Error: the incorrect rejectionof a true null hypothesis.
Type II Error: failure to reject afalse null hypothesis.
Mode: the most frequent orcommon score in the distribution.
Positively skewed: it has a tail extendingout to the right.
Negatively skewed: it has a tail extendingout to the left.
Standard deviation: it is an indicator of thevariability of a set of continuous scores around the mean.
Variance: The variance of a set of scores is simply thestandard deviation of that set of scores squared.
Statistical Inference: statisticalinference makes use of information from a sample to draw conclusions about thepopulation from which the sample was taken.
Central Limit TheoremThe Central LimitTheorem states that whenever a random sample of size n is taken from anydistribution with mean μ and variance file://localhost/Users/vivian/Library/Caches/TemporaryItems/msoclip/0/clip_image002.png, then the sample mean file://localhost/Users/vivian/Library/Caches/TemporaryItems/msoclip/0/clip_image004.png will be approximately normallydistributed with mean μ and variance file://localhost/Users/vivian/Library/Caches/TemporaryItems/msoclip/0/clip_image006.png/n. The larger the value of the samplesize n, the better the approximation to the normal. Quartile: values that divide a sample of data into fourgroups containing equal numbers of observation.Coefficient of Variation:t is the ratio of the sample standarddeviation to the sample mean:file://localhost/Users/vivian/Library/Caches/TemporaryItems/msoclip/0/clip_image008.pngQQ plot: it is used to see if a given set of datafollows some specified distribution. It should be approximately linear if thespecified distribution is the correct model.Power: the probability of rejecting the nullhypothesis when the null hypothesis is false.

评分

4

查看全部评分

somoya 发表于 2014-2-12 09:03:13 | 显示全部楼层
楼主赞一个
回复 支持 反对

使用道具 举报

塔蒂尼 发表于 2014-2-13 19:17:01 来自手机 | 显示全部楼层
赞楼主的面经和整理!祝好运!
回复 支持 反对

使用道具 举报

Vicallen 发表于 2014-2-15 00:06:20 | 显示全部楼层
lz赞一个!!! 你给的参考正是想要的!
回复 支持 反对

使用道具 举报

adamzjw 发表于 2014-2-16 14:41:49 | 显示全部楼层
cong! NCSU 好项目
回复 支持 反对

使用道具 举报

本版积分规则

请点这里访问我们的新网站:一亩三分地Instant.

Instant搜索更强大,不扣积分,内容组织的更好更整洁!目前仍在beta版本,努力完善中!反馈请点这里

关闭

一亩三分地推荐上一条 /5 下一条

手机版|小黑屋|一亩三分地论坛声明 ( 沪ICP备11015994号 )

custom counter

GMT+8, 2016-12-10 23:50

Powered by Discuz! X3

© 2001-2013 Comsenz Inc. Design By HUXTeam

快速回复 返回顶部 返回列表