Theoretical probability is found using a formula assuming equally likely outcomes, while experimental probability is found from actual trials. As the number of trials increases, experimental probability gets ______ the theoretical probability.

**Theoretical**: $P=\frac{favourable}{total}$, assuming all outcomes equally likely. $P$(heads on a fair coin) = $\frac{1}{2}$.

**Experimental**: $P=\frac{timeseventoccurred}{totaltrials}$. After 100 coin tosses with 47 heads, experimental $P$(heads) = $\frac{47}{100}=0.47$.

Law of large numbers (informally): the more trials you $run$, the closer experimental probability gets to theoretical probability. So $\frac{47}{100}$ is plausible; $\frac{47}{1,000,000}$ would be very unusual for a fair coin.