# Category: Methods

## R Plot pch Symbols: Different point shapes in R

R plot pch symbols, In this tutorial we are going to describe different pch values in R.  The plotting argument used to specify point shapes is pch. Let’s install the ggpubr package from cran, and then plot different shapes in R....

## QQ-plots in R: Quantile-Quantile Plots-Quick Start Guide

QQ-plots in R, first need to understand the Q-Q plot. The Q-Q plot is a graphical tool to help us examine if a set of data plausibly came from some theoretical distribution such as...

## Line types in R: Ultimate Guide For R Baseplot and ggplot

There are six pre-described line types available in base R. You can use those for any type of graphics, like plotting for line charts or developing simple shapes. In R base plot functions, two...

## Kendall’s Rank Correlation in R-Correlation Test

Kendall’s Rank Correlation in R, Kendall’s rank correlation coefficient is suitable for the paired ranks as in the case of Spearman’s rank correlation. The condition is that both the variables X and Y be...

## Error Bar Plot in R-Adding Error Bars-Quick Guide

Error bar Plot, Error bars are visual representations of the variability of data and used on graphs to suggest the error in a reported measurement. They give a general idea of how precise a...

## Kurtosis in R-What do you understand by Kurtosis?

Kurtosis means bulginess and it is a numerical method in statistics that measures the sharpness of the peak in the distribution. If a frequency distribution curve is more peaked compared to normal peaked curve...

Radar Chart in R, additionally called a spider plot is used to visualize the values over more than one quantitative variable. A radar chart is an informative graphical tool in which multiple variables and...

## Kruskal Wallis test in R-One-way ANOVA Alternative

Kruskal Wallis test in R, Kruskal Wallis test is one of the frequently used methods in nonparametric statistics for analyzing data in one-way classification.

It is equivalent to a one-way analysis of variance in parametric methods.

When we test the identicalness of the k population from which the independent samples have been drawn.

There is no restriction of sample size

## Cluster Sampling in R-Cluster or area sampling in a nutshell

Cluster Sampling in R, In most situations, the sampling frame for elementary units of the population is not available, moreover, it is not easy to prepare it. Cluster Meaning, the information is available to groups of items called...

## Skewness in Statistics-Calculate Skewness in R

Skewness in Statistics, what is mean by skewness? The lack of symmetry of the tails of a frequency distribution curve is known as skewness. The symmetry of tails means that the frequency of the...