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The post How to put margins on tables or arrays in R? appeared first on Data Science Tutorials

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How to put margins on tables or arrays in R?, I’ll show you how to use the addmargins function in the R programming language to add margins to tables or arrays in this post.

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The addmargins function will be used in the tutorial’s two examples to annotate the margin values on table objects.

To be more specific, the instruction includes the following details:

Providing Examples of Data

The data listed below will serve as the foundation for this R tutorial.

```data <- data.frame(x1 = c(LETTERS[1:3], "B", "B", "C"),x2 = letters[1:2])
data
x1 x2
1  A  a
2  B  b
3  C  a
4  B  b
5  B  a
6  C  b```

Consider the previous table. It demonstrates how the sample data frame has two variables and six rows.

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Then, using these data, we can build a table object (a contingency table).

```tab <- table(data)
tab
x2
x1  a b
A 1 0
B 1 2
C 1 1```

## Example 1:-Incorporate Sum Margins into the Contingency Table.

I’ll show you how to add the sum of each row and column to a table’s margins using the addmargins function in Example 1.

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Take into account the R code below:

```tab_sum <- addmargins(tab, FUN = sum)
tab_sum
x2
x1    a b sum
A   1 0   1
B   1 2   3
C   1 1   2
sum 3 3   6```

As you can see, we have a row and column that contain the sum margins of our data that are annotated.

Hope you enjoyed it.

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The post How to put margins on tables or arrays in R? appeared first on Data Science Tutorials

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