Data Science & Math

R Summary Statistics & Matrix Operations

Perform vector math, matrix multiplications, and statistical summaries in R.

R Source Code

Editable code sample with line numbers

Expected Output

When this program is compiled and executed, the terminal outputs:

Mean:     29.2 
Median:   27 
Std Dev:  13.04 

Matrix Multiplication (A %*% B):
     [,1] [,2]
[1,]    4    6
[2,]   10   12

How the Code Works

R features first-class vectorized operations. Vectors created with c() support direct statistical aggregations (mean, median, sd). %*% performs mathematical matrix multiplication.

Time Complexity

O(N) for statistics, O(M³) for matrix product

Space Complexity

O(N)

Key Takeaways & Best Practices

c() combines values into a vector.
%*% operator denotes matrix inner multiplication.

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