# Checking efficiency of randomness with entropy

I was going through random numbers and found that the randomness of certain observations is measured by the entropy as given in here. Here, $p(x_i)$ is the probability that $x_i$ will take place. But if I have fair dice then $p(x_i)$ is $\frac{1}{6}$. So, I am assuming that less is the entropy, better is the randomness. Is my conclusion correct? Also, entropy is calculated in terms of - so while determining the efficiency should I consider this negative sign also or only the positive number? I hope my question is clear. Any help will be appreciated!

-