zy · 2020年06月29日
问题如下：
Which of the following statement about two-sided confidence interval is most correct if the confidence interval become narrower?
选项：
A.the degree of confidence is smaller.
B.the degree of confidence is larger.
C.sampling size is smaller.
解释：
A is correct.
If the degree of confidence is smaller, the confidence interval become narrower.
老师，想问一下：这道题的B为什么不对？
我记得课上是说“n越大，width of confidence level越窄”，这道题的b说的不是n变大的意思吗？
谢谢！
我知道了，把选项看成degree of freedom了。 平时说的95%是不是degree of confidence？ 谢谢老师！
NO.PZ2018062016000111问题如下 Whiof the following statement about two-siconfinintervis most correif the confinintervbecome narrower?A.the gree of confinis smaller.B.the gree of confinis larger.C.sampling size is smaller. A is correct.If the gree of confinis smaller, the confinintervbecome narrower.如果置信度较小，则置信区间变窄。 two sis confinintern怎么理解呢？two si confininternnarrow,那么对应中间的confininternal是不是变宽，变大呢？
NO.PZ2018062016000111问题如下Whiof the following statement about two-siconfinintervis most correif the confinintervbecome narrower?A.the gree of confinis smaller.B.the gree of confinis larger.C.sampling size is smaller. A is correct.If the gree of confinis smaller, the confinintervbecome narrower.如果置信度较小，则置信区间变窄。 那不是应该一个变大 一个变小吗？
the gree of confinis larger. sampling size is smaller. A is correct. If the gree of confinis smaller, the confinintervbecome narrower. 老师，还是没懂置信区间和置信度是什么关系
请问 gree of confin和ｃｏｎｆｉｄｅｎｃｅ ｌｅｖｅｌ 是一个东西么。那ｄｅｇｒｅｅ ｏｆ ｓｉｇｎｉｆｉｃａｎｃｅ呢
