Stone Skimming Maths

Mean, median, range, estimation and speed — using stone skimming session distances and championship records (including the viral Liverpool Stone Skimming Society trend).

Reference data: 13 June 2026.

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Number of questions 5 8 10 12 14

Topic focus All topics Mean, median and range Estimating distances Speed, distance and time Number and records

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Topics covered

• Mean, median and range from competition distances
• Estimating total skip distance
• Speed = distance ÷ time across the water
• Record differences and ratios