Linked Questions

11
votes
3answers
6k views

What does a confidence interval (vs. a credible interval) actually express? [duplicate]

Possible Duplicate: What, precisely, is a confidence interval? Yes, similar questions have been asked before, but many of the answers seem contradictory and don't address my issue. (Or my ...
2
votes
1answer
821 views

What is the fundamental confidence interval fallacy? [duplicate]

Beginner question here. I've read (see this paper) that when computing confidence intervals if you get a given interval with a confidence level of 95%, then it is a fallacy to think that the true ...
5
votes
1answer
258 views

Boston University School of Public Health web page on confidence intervals [duplicate]

I'm wondering about the correctness of the Boston University School of Public Health's web page on confidence intervals, particularly the interpretations. For example, specific interpretation ...
3
votes
1answer
252 views

How to correctly understand confidence intervals and confidence level [duplicate]

I recently read an online discussion about confidence levels and confidence intervals. To be honest, I'm confused. What's the bottom line there? For a specific statement, say, Foobar is 3.45 (...
0
votes
1answer
103 views

Confidence interval deeper explanation? [duplicate]

I have some data on a drug where doctors are trying to find out based on collected data how many patients get heart disease because of a drug. The output is the following: 95%CI 1.72(1.28-2.30) for ...
2
votes
0answers
79 views

Confidence Intervals Intuition [duplicate]

I am new to statistics and have run into some trouble understanding computing confidence intervals and am seeking some help. I will outline the motivating example in my textbook and hopefully someone ...
0
votes
0answers
44 views

having trouble interpreting confint function using R (logistic regression) [duplicate]

I'm trying to interpret these results of using R confint function , but I can not understand. This is a logistic regression about breast cancer. how to interpret confint function. What the 2.5% and 97....
0
votes
0answers
18 views

What are confidence intervals? [duplicate]

Can anyone please help me in understanding what confidence intervals are and how are they useful in statistics and machine learning?
1
vote
0answers
9 views

How to Interpret Confidence Interval ILSR Ch 3 Q10g [duplicate]

Using the Carseats dataset in R, predicting the Sales of carseats (Unit sales (in thousands)) using price and US (sold in US, not sold in US). How would I interpret the confidence interval in words? ...
0
votes
0answers
8 views

Interpretation of the confidence interval [duplicate]

I just read that a (1 - alpha)*100% confidence interval cannot be interpreted as follows: The probability that mu is in the confidence interval is (1 - alpha)*100%. That is counterintuitive from the ...
262
votes
12answers
78k views

Why does a 95% Confidence Interval (CI) not imply a 95% chance of containing the mean?

It seems that through various related questions here, there is consensus that the "95%" part of what we call a "95% confidence interval" refers to the fact that if we were to exactly replicate our ...
87
votes
7answers
11k views

Are there any examples where Bayesian credible intervals are obviously inferior to frequentist confidence intervals

A recent question on the difference between confidence and credible intervals led me to start re-reading Edwin Jaynes' article on that topic: Jaynes, E. T., 1976. `Confidence Intervals vs Bayesian ...
48
votes
14answers
6k views

Clarification on interpreting confidence intervals?

My current understanding of the notion "confidence interval with confidence level $1 - \alpha$" is that if we tried to calculate the confidence interval many times (each time with a fresh sample), it ...
29
votes
7answers
51k views

What's the difference between a probability and a proportion?

Say I have eaten hamburgers every Tuesday for years. You could say that I eat hamburgers 14% of the time, or that the probability of me eating a hamburger in a given week is 14%. What are the main ...
14
votes
3answers
53k views

How to choose a confidence level?

I often use a 90% confidence level, accepting that this has a greater degree of uncertainty than 95% or 99%. But are there any guidelines on how to choose the right confidence level? Or guidelines for ...

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