The　statistical　information,　in　general,　can　be　visually　presented　in　the　three　basic　forms:　statistical　information　in　text　(text　for　short),　statistical　graph,　and　statistical　graph　with　text　(i.e.　the　combination　of　graph　and　text).　The　impact　of　the　different　forms　on　people＇s　understanding　of　the　statistical　information　is　still　unclear.　To　address　this　issue,　this　study　using　eye-tracking　investigated　the　reading　efficiency　(reading　time),　reading　effect　(accuracy)　and　mental　workload　(pupil　diameter)　during　36　subjects　reading　the　statistical　information　presented　in　any　of　the　three　forms.　The　results　showed　that:　(1)　the　reading　time:　the　statistical　graph　was　significantly　shorter　than　the　text　and　statistical　graph　with　text,　which　suggests　that　the　reading　efficiency　of　statistical　graph　is　higher　than　other　forms;　(2)　the　accuracy:　there　were　no　significant　differences　among　the　three　forms,　which　suggests　that　there　are　no　significant　difference　on　the　reading　effect;　(3)　the　pupil　diameter:　both　statistical　graph　and　statistical　graph　with　text　were　significantly　smaller　than　the　text,　which　reveals　that　the　statistical　graph　and　statistical　graph　with　text　in　mental　workload　are　significantly　lower　than　the　text.　The　findings　also　provide　the　evidences　for　the　reason　why　people　prefer　the　statistical　information　presented　in　the　form　of　the　statistical　graph　with　text.　©　2011　IEEE.