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2. Relative risk - Wikipedia

   en.wikipedia.org/wiki/Relative_risk

   Relative risk is used in the statistical analysis of the data of ecological, cohort, medical and intervention studies, to estimate the strength of the association between exposures (treatments or risk factors) and outcomes. [ 2] Mathematically, it is the incidence rate of the outcome in the exposed group, , divided by the rate of the unexposed ...

3. How to budget with the 50/30/20 rule: A simple, effective ...

   www.aol.com/finance/50-30-20-budgeting-rule...

   Say you earn an income of $2,000 a month. Following the 50/30/20 rule would mean allocating $1,000 to needs, $600 to wants and $400 to savings or high-interest debt. But if your monthly rent and ...

4. Power (statistics) - Wikipedia

   en.wikipedia.org/wiki/Power_(statistics)

   Power (statistics) In frequentist statistics, power is a measure of the ability of an experimental design and hypothesis testing setup to detect a particular effect if it is truly present. In typical use, it is a function of the test used (including the desired level of statistical significance ), the assumed distribution of the test (for ...

5. Sample size determination - Wikipedia

   en.wikipedia.org/wiki/Sample_size_determination

   Sample size determination or estimation is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a study is usually determined ...

6. Binomial proportion confidence interval - Wikipedia

   en.wikipedia.org/wiki/Binomial_proportion...

   Binomial proportion confidence interval. In statistics, a binomial proportion confidence interval is a confidence interval for the probability of success calculated from the outcome of a series of success–failure experiments ( Bernoulli trials ). In other words, a binomial proportion confidence interval is an interval estimate of a success ...

7. Hazard ratio - Wikipedia

   en.wikipedia.org/wiki/Hazard_ratio

   Hazard ratio. In survival analysis, the hazard ratio ( HR) is the ratio of the hazard rates corresponding to the conditions characterised by two distinct levels of a treatment variable of interest. For example, in a clinical study of a drug, the treated population may die at twice the rate per unit time [clarify] of the control population.

8. Percentage - Wikipedia

   en.wikipedia.org/wiki/Percentage

   In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign (%), [ 1] although the abbreviations pct., pct, and sometimes pc are also used. [ 2] A percentage is a dimensionless number (pure number), primarily used for expressing proportions ...

9. Likelihood ratios in diagnostic testing - Wikipedia

   en.wikipedia.org/wiki/Likelihood_ratios_in...

   In evidence-based medicine, likelihood ratios are used for assessing the value of performing a diagnostic test. They use the sensitivity and specificity of the test to determine whether a test result usefully changes the probability that a condition (such as a disease state) exists. The first description of the use of likelihood ratios for ...