A bar graph illustrating the results of an experiment on group initiation shows a direct relationship between the difficulty of joining a group and how much its members like it. The graph's x-axis represents the 'Difficulty of initiation' with categories 'None,' 'Easy,' and 'Difficult,' while the y-axis indicates the 'Relative magnitude of liking a group.' The data reveals that participants who faced a 'Difficult' initiation reported a high level of liking for the group, whereas those with 'None' or 'Easy' initiations showed only low to moderate liking.