Changes to Statistics

• 2022-11-16 10:27:03 UTC (Hans Georg Schaathun): Fixed math font
• 2022-11-16 10:24:12 UTC (Hans Georg Schaathun): Notes for current week
• 2022-11-15 12:44:05 UTC (Hans Georg Schaathun): statistics exercises
• 2022-11-14 17:13:28 UTC (Hans Georg Schaathun): link
• 2022-11-14 13:58:03 UTC (Hans Georg Schaathun): stub