Find Sum, Mean and Product of a Vector in R

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:

• x: Numeric Vector

• prod() is used to calculate product

Syntax: prod(x)

Parameters:

• x: Numeric Vector

Given below are examples to help you understand better.

Example 1:

R

vec = c(1, 2, 3 , 4)
print("Sum of the vector:")

# inbuilt sum method
print(sum(vec))

# using inbuilt mean method
print("Mean of the vector:")
print(mean(vec))

# using inbuilt product method
print("Product of the vector:")
print(prod(vec))

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:")

# inbuilt sum method
print(sum(vec))

# using inbuilt mean method
print("Mean of the vector:")
print(mean(vec))

# using inbuilt product method
print("Product of the vector:")
print(prod(vec))

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

# declaring a vector
vec = c(1.1,NA, 2, 3.0,NA )
print("Sum of the vector:")

# inbuilt sum method
print(sum(vec))

# using inbuilt mean method
print("Mean of the vector with NaN values:")

# not ignoring NaN values
print(mean(vec))

# ignoring missing values
print("Mean of the vector without NaN values:")
print(mean(vec,na.rm = TRUE))

# using inbuilt product method
print("Product of the vector:")
print(prod(vec))

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