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

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

One issue with range and the interquartile range (IQR) both is that they don’t include information from all the…

There are two main kinds of studies, observational studies and, experimental studies. The statistical process can be viewed in…

Stock Traders look for various signal like GDP, inflation rate, interest rate to predict the future economic condition. One…

When analyzing distributions, we often discuss their modalities. The modalities is the number of peaks they exhibit. A distribution…