Confidence Intervals

Question 1

Confidence Interval for Difference of Means
(Common Variance)

Answer 1

Confidence interval for means of common variance is normally distributed:

Question 2

Confidence Interval for Sample from Normally Distributed Population

Answer 2

Question 3

Binomial Proportion Confidence Interval

Answer 3

The approximation is usually justified by the central limit theorem. The formula is

Question 4

How to Calcuate a Confidence Interval for a Line of Regression

Answer 4

For a best fit line of least squares linear regression:

Question 5

How to Calculate Confidence Interval for Population Standard Deviation from Sample Standard Deviation (or variance)?

Answer 5

Given a normally distributed sample with:

n - observations

S - sample standard deviation

To get 95% confidence interval:

Question 6

Confidence Interval for Nelson Aalen Integrated Hazard

Answer 6

Question 7

Confidence Interval for Kaplan Meier Estimate of Survival Function

Answer 7