Flashcard 14 - Data Analysis and Statistics Flashcard Set for the Math Basics

\[\text{Probability}=\dfrac{\text{number of past successes}}{\text{total number of past outcomes}}\]

For instance, if a softball player had 300 at bats and struck out 80 times, then the probability that she strikes out in her next at bat is:

\[\text{Probability}=\dfrac{80}{300}=0.2666... =26.66…\%\]

While it’s not necessarily successful to strike out in softball, we are looking for the probability of striking out. So, the past number of strikeouts is the number of past “successes” in terms of calculating probability.