If you have a sample or population of data and you want to understand the different properties, the different…

Previous article discussed the basic contingency table of proportions and percentages. People often want to ask more about relationships…

We can get the numerical summary through measures of central tendency, location, and variability for numerical data. But numbers…

1. “Fallen angels will all go back up, eventually.” A “fallen angel” is a stock that once performed well…

Data is set of observation. This observation can be collected in various ways such as field notes, survey or…

We have covered major measures of center and location—mean, median, and mode—we now turn to other important measures: percentiles…