Normal distribution is describing random variables with bell-shaped probability density functions. Normal distribution is widely used in data science because…
When a correlation, usually Person type correlation, is calculated, two variables have to be continuous. But this requirement does not…
dplyr is a package that belongs to tidyverse framework. dplyr allows usage of pipeline structure (%>%), which can chain multiple…
R language provides several useful functions for importing delimited files and creating data frames. These delimited files are often stored…
List is the simplest type of data structure in Python programming. A list is used to store a collection of…
Python is among the most popular programming language for data science nowadays, and getting started with Python is quite easy.…
Categorical variables, including nominal and ordinal variables in R programming language are called factor variables. For example, gender(male/female) is nominal,…
When R software and RStudio program have been installed on your computer, R working session can be simply started by…
list is a type of data structure in R programming language. Unlike other data structures, especially matrix and vector, in…
Violin plot is quite similar as boxplot, in the sense that it shows the range of the data. And at…