开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

zhy · 2019年03月16日

问一道题:NO.PZ2015120204000014

问题如下图:

    

选项:

A.

B.

C.

解释:


 可否帮忙辨析一下,关于置信区间上下限的计算公式中,标准误什么时候需要除以根号n呢?

1 个答案

菲菲_品职助教 · 2019年03月18日

同学你好,这已经写了是标准误了,所以直接用就好了。如果给的是标准差,才要除以根号n,标准误是不用除的。

  • 1

    回答
  • 3

    关注
  • 475

    浏览
相关问题

NO.PZ2015120204000014 问题如下 Baseon past research, Hansen selects the following inpennt variables to preIPO initireturns: Unrwriter rank = 1–10, where 10 is highest rankPre-offer priaustment (Expressea cimal) = (Offer pri– Initifiling price)/Initifiling priceOffer size ($ millions) = Shares sol× Offer priceFraction retaine(Expressea cimal) = Fraction of totcompany shares retaineinsirsHansen collects a sample of 1,725 recent IPOs for his regression mol.\Hansen’s Regression Results pennt Variable: IPO InitiReturn (Expressein cimForm, i.e., 1% = 0.01)The 95 percent confinintervfor the regression coefficient for the pre-offer priaustment is closest to: A.0.156 to 0.714. B.0.395 to 0.475. C.0.402 to 0.468. B is correct.The 95% confinintervis 0.435 ± (0.0202 × 1.96) = (0.395, 0.475). 第一个表格中的t统计量是做什么用的,和第二个表中t value 的区别

2024-11-01 15:45 1 · 回答

NO.PZ2015120204000014 问题如下 Baseon past research, Hansen selects the following inpennt variables to preIPO initireturns: Unrwriter rank = 1–10, where 10 is highest rankPre-offer priaustment (Expressea cimal) = (Offer pri– Initifiling price)/Initifiling priceOffer size ($ millions) = Shares sol× Offer priceFraction retaine(Expressea cimal) = Fraction of totcompany shares retaineinsirsHansen collects a sample of 1,725 recent IPOs for his regression mol.\Hansen’s Regression Results pennt Variable: IPO InitiReturn (Expressein cimForm, i.e., 1% = 0.01)The 95 percent confinintervfor the regression coefficient for the pre-offer priaustment is closest to: A.0.156 to 0.714. B.0.395 to 0.475. C.0.402 to 0.468. B is correct.The 95% confinintervis 0.435 ± (0.0202 × 1.96) = (0.395, 0.475). 计算中不用考虑n=1700多这个信息吗

2023-08-29 19:33 2 · 回答

NO.PZ2015120204000014问题如下 Baseon past research, Hansen selects the following inpennt variables to preIPO initireturns: Unrwriter rank = 1–10, where 10 is highest rankPre-offer priaustment (Expressea cimal) = (Offer pri– Initifiling price)/Initifiling priceOffer size ($ millions) = Shares sol× Offer priceFraction retaine(Expressea cimal) = Fraction of totcompany shares retaineinsirsHansen collects a sample of 1,725 recent IPOs for his regression mol.\Hansen’s Regression Results pennt Variable: IPO InitiReturn (Expressein cimForm, i.e., 1% = 0.01)The 95 percent confinintervfor the regression coefficient for the pre-offer priaustment is closest to: A.0.156 to 0.714.B.0.395 to 0.475.C.0.402 to 0.468.B is correct.The 95% confinintervis 0.435 ± (0.0202 × 1.96) = (0.395, 0.475).为什么是双尾?题目里没看到提示双尾的词语

2023-04-12 00:26 1 · 回答

NO.PZ2015120204000014 问题如下 Baseon past research, Hansen selects the following inpennt variables to preIPO initireturns: Unrwriter rank = 1–10, where 10 is highest rankPre-offer priaustment (Expressea cimal) = (Offer pri– Initifiling price)/Initifiling priceOffer size ($ millions) = Shares sol× Offer priceFraction retaine(Expressea cimal) = Fraction of totcompany shares retaineinsirsHansen collects a sample of 1,725 recent IPOs for his regression mol.\Hansen’s Regression Results pennt Variable: IPO InitiReturn (Expressein cimForm, i.e., 1% = 0.01)The 95 percent confinintervfor the regression coefficient for the pre-offer priaustment is closest to: A.0.156 to 0.714. B.0.395 to 0.475. C.0.402 to 0.468. B is correct.The 95% confinintervis 0.435 ± (0.0202 × 1.96) = (0.395, 0.475). coefficient不应该是这些吗,为啥用coefficient来当作x(mean)

2023-01-17 10:51 1 · 回答

NO.PZ2015120204000014 问题如下 Baseon past research, Hansen selects the following inpennt variables to preIPO initireturns: Unrwriter rank = 1–10, where 10 is highest rankPre-offer priaustment (Expressea cimal) = (Offer pri– Initifiling price)/Initifiling priceOffer size ($ millions) = Shares sol× Offer priceFraction retaine(Expressea cimal) = Fraction of totcompany shares retaineinsirsHansen collects a sample of 1,725 recent IPOs for his regression mol.\Hansen’s Regression Results pennt Variable: IPO InitiReturn (Expressein cimForm, i.e., 1% = 0.01)The 95 percent confinintervfor the regression coefficient for the pre-offer priaustment is closest to: A.0.156 to 0.714. B.0.395 to 0.475. C.0.402 to 0.468. B is correct.The 95% confinintervis 0.435 ± (0.0202 × 1.96) = (0.395, 0.475). 这个考点是不是在新考纲里已经删掉了?我看视频没讲

2023-01-08 17:27 1 · 回答