Answer
See below.
Work Step by Step
We have $6$ outcomes, out of which $5$ are not a $3$. Thus the theoretical probability is: $\frac{5}{6}=\frac{125}{150}$
Using the table the experimental probability here is: $\frac{132}{150}$ (because we have $150$ throws in total and out of these $150-18=132$ were not a $3$).
The two probabilities are slightly further apart than expected.