Investopedia / Matthew Collins A quartile is a statistical term that describes a division of observations into four defined intervals based on the values of the data and how they compare to the ...

We used the first sample to calculate the risk-standardized readmission rate within 30 days for each hospital, and we classified hospitals into performance quartiles, with a lower readmission rate ...

Visualization methods enhance our understanding of sample data and help us make comparisons across samples. Box plots are a simple but powerful graphing tool that can be used in place of ...

Notice that the estimator is defined to be right continuous; that is, the events at t i are included in the estimate of S(t i). The corresponding estimate of the ...

Estimates from our model suggest that if all the nursing homes in our sample had been in the highest quartile of staff vaccination coverage (82.7% on average), 4775 cases among residents (29% of ...