How to calculate the entropy of stimulus and response in the Stimulus Response Matrix?

Question

Could you please calculate Hr and Hs in the following figure?

Answer 1

Here's my attempt in solving this problem. Please correct me if I am wrong.

For stimulus:
$H_s= \left( \frac{10}{30} \times log_2 (\frac{1}{\frac{10}{30}}) \right ) + \left( \frac{10}{30} \times log_2 (\frac{1}{\frac{10}{30}}) \right ) + \left( \frac{10}{30} \times log_2 (\frac{1}{\frac{10}{30}}) \right)$
$H_s= 1.58496$

For response:
$H_r= \left( \frac{11}{30} \times log_2 (\frac{1}{\frac{11}{30}}) \right ) + \left( \frac{11}{30} \times log_2 (\frac{1}{\frac{11}{30}}) \right ) + \left( \frac{8}{30} \times log_2 (\frac{1}{\frac{8}{30}}) \right)$
$H_r= 1.56997$