How to plot strip chart in R?
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How to plot strip chart in R?

How to plot strip chart in R?

This recipe helps you plot strip chart in R

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Recipe Objective

A strip chart is a special form of chart which showcases raw numerical data over a period of time along a single strip. Just as Boxplots, they are mainly used for visualising the distribution of the dataset. The only difference between the two charts is that strip chart is mainly used when sample sizes are small and you can see the individual points. They are also known as one-dimensional scatter plots.

This recipe demonstartes how to create a strip chart in R.

Step 1: Loading library and dataset

Dataset description: It is the basic data about the customers going to the supermarket mall. The variable that we interested in is Annual.Income which is in 1000s

# Data manipulation package library(tidyverse) ​ # reading a dataset customer_seg = read.csv('Mall_Customers.csv') ​ glimpse(customer_seg)
Observations: 200
Variables: 5
$ CustomerID              1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1...
$ Gender                  Male, Male, Female, Female, Female, Female, ...
$ Age                     19, 21, 20, 23, 31, 22, 35, 23, 64, 30, 67, ...
$ Annual.Income..k..      15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 19, ...
$ Spending.Score..1.100.  39, 81, 6, 77, 40, 76, 6, 94, 3, 72, 14, 99,...

Step 2. Strip Chart

We will display a strip chart of Annual Income variable using stripchart() built-in function

Syntax: stripchart(x, main = , xlab =, method= , col = , pch =)

where:

  1. x = a numeric vector that needs to be plotted;
  2. main = gives the title of the chart;
  3. xlab = gives the label of the x-axis;
  4. method = This gives a method to be used to separate the overlapping points;
  5. col = we can input the required colour to the points through this arguement.
  6. pch = Gives the shape of the points.
# method = jitter means that the points will be jittered around instead of bein overlap stripchart(customer_seg$Annual.Income..k.., main = "Annual Income Distribution", xlab = "Annual Income (in 1000s)", method = "jitter", col = "red", pch = 1)

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