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

贝贝 · 2018年11月04日

问一道题:NO.PZ201512020300000401 第1小题

* 问题详情,请 查看题干

问题如下图:

    

选项:

A.

B.

C.

解释:


拒绝原假设,结论应该是at least one 不等于0啊

1 个答案

菲菲_品职助教 · 2018年11月05日

同学你好,你应该问的是解答里面最后一句话吧,他这个是个定语从句,后面这个“all regression coefficients are equal to 0”是用来修饰前面的原假设的,而不是最终的拒绝原假设的结论。

如果你问的问题不是这个点,欢迎继续追问~

  • 1

    回答
  • 0

    关注
  • 359

    浏览
相关问题

NO.PZ201512020300000401问题如下 1. Regarng the intern’s Question 1, is the regression mol a whole significant the 0.05 level?A.No, because the calculateF-statistic is less ththe criticvalue for F.B.Yes, because the calculateF-statistic is greater ththe criticvalue for F.C.Yes, because the calculateχ 2 statistic is greater ththe criticvalue for [#PZMATH172#].B is correct.The F-test is useto termine if the regression mol a whole is significant.F = Mesquare regression (MSR) ÷ Mesquareerror (MSE)MSE = SSE/[n – (k + 1)] = 19,048 ÷ 427 = 44.60MSR = SSR/k = 1071 ÷ 3 = 357F = 357 ÷ 44.60 = 8.004The criticvalue for grees of freem of 3 an427 with α=0.05 (one-tail) is F = 2.63 from Exhibit 5. The calculateF is greater ththe criticvalue, anChiesa shoulrejethe null hypothesis thall regression coefficients are equto zero. 本题中为什么2是427?1和2分别指什么什么数值?

2024-03-29 14:45 1 · 回答

NO.PZ201512020300000401 问题如下 1. Regarng the intern’s Question 1, is the regression mol a whole significant the 0.05 level? A.No, because the calculateF-statistic is less ththe criticvalue for F. B.Yes, because the calculateF-statistic is greater ththe criticvalue for F. C.Yes, because the calculateχ 2 statistic is greater ththe criticvalue for [#PZMATH172#]. B is correct.The F-test is useto termine if the regression mol a whole is significant.F = Mesquare regression (MSR) ÷ Mesquareerror (MSE)MSE = SSE/[n – (k + 1)] = 19,048 ÷ 427 = 44.60MSR = SSR/k = 1071 ÷ 3 = 357F = 357 ÷ 44.60 = 8.004The criticvalue for grees of freem of 3 an427 with α=0.05 (one-tail) is F = 2.63 from Exhibit 5. The calculateF is greater ththe criticvalue, anChiesa shoulrejethe null hypothesis thall regression coefficients are equto zero. 老师 这题是不是可以直接用P-value 来判断,所有X的P-value都小于0.01 那就说明都是significant? 另外想我问下 α=0.05是因为下面图表上标明了是0.05就直接认为是这题的α是0.05么?

2024-03-28 15:00 1 · 回答

NO.PZ201512020300000401 问题如下 1. Regarng the intern’s Question 1, is the regression mol a whole significant the 0.05 level? A.No, because the calculateF-statistic is less ththe criticvalue for F. B.Yes, because the calculateF-statistic is greater ththe criticvalue for F. C.Yes, because the calculateχ 2 statistic is greater ththe criticvalue for [#PZMATH172#]. B is correct.The F-test is useto termine if the regression mol a whole is significant.F = Mesquare regression (MSR) ÷ Mesquareerror (MSE)MSE = SSE/[n – (k + 1)] = 19,048 ÷ 427 = 44.60MSR = SSR/k = 1071 ÷ 3 = 357F = 357 ÷ 44.60 = 8.004The criticvalue for grees of freem of 3 an427 with α=0.05 (one-tail) is F = 2.63 from Exhibit 5. The calculateF is greater ththe criticvalue, anChiesa shoulrejethe null hypothesis thall regression coefficients are equto zero. 这题里面的x项不是只有两个吗?k为什么等于3?

2023-08-11 10:50 1 · 回答

NO.PZ201512020300000401 问题如下 1. Regarng the intern’s Question 1, is the regression mol a whole significant the 0.05 level? A.No, because the calculateF-statistic is less ththe criticvalue for F. B.Yes, because the calculateF-statistic is greater ththe criticvalue for F. C.Yes, because the calculateχ 2 statistic is greater ththe criticvalue for [#PZMATH172#]. B is correct.The F-test is useto termine if the regression mol a whole is significant.F = Mesquare regression (MSR) ÷ Mesquareerror (MSE)MSE = SSE/[n – (k + 1)] = 19,048 ÷ 427 = 44.60MSR = SSR/k = 1071 ÷ 3 = 357F = 357 ÷ 44.60 = 8.004The criticvalue for grees of freem of 3 an427 with α=0.05 (one-tail) is F = 2.63 from Exhibit 5. The calculateF is greater ththe criticvalue, anChiesa shoulrejethe null hypothesis thall regression coefficients are equto zero. overall regression mol is significant?

2023-07-30 18:00 1 · 回答

老师好,这题我没有疑问,题目和的显示有问题,烦请修正,谢谢

2020-01-31 15:32 1 · 回答