sum(), mean(), and prod() methods are available in R which are used to compute the specified operation over the arguments specified in the method. In case, a single vector is specified, then the operation is performed over individual elements, which is equivalent to the application of for loop.
Function Used:
- mean() function is used to calculate mean
Syntax: mean(x, na.rm)
Parameters:
- x: Numeric Vector
- na.rm: Boolean value to ignore NA value
- sum() is used to calculate sum
Syntax: sum(x)
Parameters:
- prod() is used to calculate product
Syntax: prod(x)
Parameters:
Given below are examples to help you understand better.
Example 1:
R
vec = c(1, 2, 3 , 4)
print("Sum of the vector:")
print(sum(vec))
print("Mean of the vector:")
print(mean(vec))
print("Product of the vector:")
print(prod(vec))
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Output
[1] “Sum of the vector:”
[1] 10
[1] “Mean of the vector:”
[1] 2.5
[1] “Product of the vector:”
[1] 24
Example 2:
R
vec = c(1.1, 2, 3.0 )
print("Sum of the vector:")
print(sum(vec))
print("Mean of the vector:")
print(mean(vec))
print("Product of the vector:")
print(prod(vec))
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Output
[1] “Sum of the vector:”
[1] 6.1
[1] “Mean of the vector:”
[1] 2.033333
[1] “Product of the vector:”
[1] 6.6
Example 3 : Vector with NaN values
R
vec = c(1.1,NA, 2, 3.0,NA )
print("Sum of the vector:")
print(sum(vec))
print("Mean of the vector with NaN values:")
print(mean(vec))
print("Mean of the vector without NaN values:")
print(mean(vec,na.rm = TRUE))
print("Product of the vector:")
print(prod(vec))
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Output
[1] “Sum of the vector:”
[1] NA
[1] “Mean of the vector with NaN values:”
[1] NA
[1] “Mean of the vector without NaN values:”
[1] 2.033333
[1] “Product of the vector:”
[1] NA