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What is the formula for obtaining confidence interval for rate ratio of two age adjusted rates?
95% confidence interval for rate can be expressed as : Rate +/- 1.96 Rate/sqrt(n) where n is the number of events and sqrt means square root. Hope this helps. Omar.
What is z value for 76 percent ci?
The answer will depend on whether the confidence interval is one-sided, or two-sided and, if two-sided, whether or not it is symmetrical. Symmetrical 2-sided: ±0.189
How is the term confidence interval defined?
A term used in inferential statistics which measures the probability that a population parameter will fall between two set values. The confidence can take any number of probabilities, with most common probabilities being : 95% or 99%.
The interval between two occurrences is?
The interval between two occurences is TIME.
What is a confidence interval in statistics?
When you calculate a statistic the result is not going to be perfectly accurate because of random errors in your observations. You therefore can give the result as one value along with a confidence interval (CI) around it. There are two interpretations of a CI. One interpretation is that you can be confident, with the stated level of confidence, that the true value of your statistic lies within the CI. The other interpretation is that if you repeated your experiment then, for the stated percentage of cases, the statistic would lie within the CI.
