One of the way to measure the variability is to calculate the difference of each observation from the mean.…

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

Stem and leaf plot is used to plot for a numerical variable. It’s essentially a way to list our…

There is an important distinction between a sample of data and population of data. So, let’s take a research…

Creating good graphics is a very important part of data visualization. Data visualization is not a science this is…

To better illustrate the concepts of mean, median and mode, let’s dive into an example survey about what makes…