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How to display x-bar in base R plot?
To display x-bar in base R plot, we can use text function and define the bar with bar function inside expression function.
For example, if we have a vector called x that contains first ten numbers (1 to 10) then we can display it’s mean inside the base R plot by using the command given below −
text(0.97,5.5,expression(bar("x")))
Check out the examples given below to understand how it works.
Example 1
Use the code given below to display x-bar in base R plot −
plot(mean(1:100)) text(0.97,50.5,expression(bar("x")))
Output
If you execute the above given snippet, it generates the following Output −
Example 2
Use the code given below to display x-bar in base R plot −
plot(mean(rnorm(10000,5,2))) text(0.97,5.05,expression(bar("x")))
Output
If you execute the above given snippet, it generates the following Output −
Example 3
Use the code given below to display x-bar in base R plot −
plot(mean(rpois(10000,10))) text(0.97,10.05,expression(bar("x")))
Output
If you execute the above given snippet, it generates the following Output −
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