Mean Fitness

Mean fitness is a measure of how well a group of organisms is performing in their environment. It represents the average ability of individuals within the population to survive and reproduce. Essentially, it averages the 'success rate' of all members, indicating how well the group is adapting over time. A higher mean fitness means the population, on average, is better suited and more successful, while a lower mean fitness suggests challenges or less adapted individuals. It helps scientists understand overall evolutionary progress and the impact of environmental changes on the population.