(R Tutorials for Citizen Data Scientist) Statistics with R for Business Analysts – Linear Regression Regression analysis is a very widely used statistical tool to establish a relationship model between two variables. One of these variable is called predictor variable whose value is gathered through experiments. The other variable is called response variable whose value …
Month: December 2020
(R Tutorials for Citizen Data Scientist) Statistics with R for Business Analysts – Mean, Median and Mode Statistical analysis in R is performed by using many in-built functions. Most of these functions are part of the R base package. These functions take R vector as an input along with the arguments and give the result. …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Scatterplots Scatterplots show many points plotted in the Cartesian plane. Each point represents the values of two variables. One variable is chosen in the horizontal axis and another in the vertical axis. The simple scatterplot is created using the plot() function. Syntax The basic syntax for …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Line Graphs A line chart is a graph that connects a series of points by drawing line segments between them. These points are ordered in one of their coordinate (usually the x-coordinate) value. Line charts are usually used in identifying the trends in data. …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Histograms A histogram represents the frequencies of values of a variable bucketed into ranges. Histogram is similar to bar chat but the difference is it groups the values into continuous ranges. Each bar in histogram represents the height of the number of values present …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Boxplots Boxplots are a measure of how well distributed is the data in a data set. It divides the data set into three quartiles. This graph represents the minimum, maximum, median, first quartile and third quartile in the data set. It is also useful …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Bar Charts A bar chart represents data in rectangular bars with length of the bar proportional to the value of the variable. R uses the function barplot() to create bar charts. R can draw both vertical and Horizontal bars in the bar chart. In bar chart …
(R Tutorials for Citizen Data Scientist) R Visualisation for Beginners – Pie Charts R Programming language has numerous libraries to create charts and graphs. A pie-chart is a representation of values as slices of a circle with different colors. The slices are labeled and the numbers corresponding to each slice is also represented in the …
(R Tutorials for Citizen Data Scientist) Beginners tutorial with R – RDBMS The data is Relational database systems are stored in a normalized format. So, to carry out statistical computing we will need very advanced and complex Sql queries. But R can connect easily to many relational databases like MySql, Oracle, Sql server etc. and …
(R Tutorials for Citizen Data Scientist) Beginners tutorial with R – How to load an Excel File Microsoft Excel is the most widely used spreadsheet program which stores data in the .xls or .xlsx format. R can read directly from these files using some excel specific packages. Few such packages are – XLConnect, xlsx, gdata …