Compute Variance and Standard Deviation of a value in R Programming – var() and sd() Function
var() function in R Language computes the sample variance of a vector. It is the measure of how much value is away from the mean value.
Syntax: var(x)
Parameters:
x : numeric vector
Example 1: Computing variance of a vector
x < - c( 1 , 2 , 3 , 4 , 5 , 6 , 7 )
var(x)
print (x)
|
Output:
4.667
Here in the above code, we took an example vector “x1” and calculated its variance.
sd() Function
sd() function is used to compute the standard deviation of given values in R. It is the square root of its variance.
Syntax: sd(x)
Parameters:
x: numeric vector
Example 1: Computing standard deviation of a vector
x2 < - c( 1 , 2 , 3 , 4 , 5 , 6 , 7 )
sd(x2)
print (x2)
|
Output: 2.200
Here in the above code, we took an example vector “x2” and calculated its standard deviation.
Last Updated :
26 May, 2020
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...