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

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

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

In a dataset, an alternative plot apart from the histogram is a density plot. Similar to a histogram, a…

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

So, let’s look at another example to understand tabulating the two categorical variables. In previous article we have described…