This lecture focuses on the applications of quantum science, specifically discussing densities and statistics. The instructor presents the binomial distribution, explaining the probability of obtaining a certain number of successes in independent trials, where each trial has a specific probability of success. The lecture covers the mean and variance of successes, providing formulas and examples to illustrate these concepts. The discussion then transitions to the Poisson distribution, detailing its derivation from the binomial distribution as the number of trials approaches infinity and the probability of success approaches zero. The instructor explains the mean number of successes in this context and discusses the moments and variance associated with the Poisson distribution. Throughout the lecture, various examples are provided to clarify the application of these statistical concepts in quantum science, emphasizing their relevance in understanding quantum phenomena.