# Mosaic plot in R

Mosaic plot is a graphical representation of two way contingency table which pictographically represents the relationship among two or more categorical variables. Plot is divided into rectangles. In this tutorial, let’s see how to create a mosaic plot in R

#### Concept behind the mosaic plot:

Let’s consider the UCBAdmisssions data set.

#### First Split: male and female ratio

 male 2691 female 1835

#### Third split: admission and rejection across departments on male and female

 Male Female Department A Admitted 512 89 Rejected 313 19 Department B Admitted 353 17 Rejected 207 8 Department C Admitted 120 202 Rejected 205 391 Department D Admitted 138 131 Rejected 279 244 Department E Admitted 53 94 Rejected 138 299 Department F Admitted 22 24 Rejected 351 317

So the plot will be

#### How to create mosaic plot in R:

Mosaic plot in R can be created with mosaicplot() function as shown below

```# mosaic plot in R with mosaicplot function

col = hcl(c(120, 10)),
main = "Student admissions at UC Berkeley")
```
• first argument is the dataset
• second argument is vector ordering of the variables
• third argument is coloring the plot
• last argument is the mosaic plot heading

so the final mosaic plot will be

## Author

• With close to 10 years on Experience in data science and machine learning Have extensively worked on programming languages like R, Python (Pandas), SAS, Pyspark.