Question P6 An average is a total
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A cyclist's speed was recorded at 5 checkpoints along a race: 18 km/h, 22 km/h, 26 km/h, 24 km/h and 20 km/h. What was the average speed over the 5 checkpoints?
Answer
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Turn the average back into a total before doing anything with it.
In this one. An average is the total shared equally among all the readings, so it always lands between the smallest and the largest — below the fastest checkpoint (26 km/h), never at it.
The word 'average' appears alongside a group being split into two parts, or two separate journeys or trips being combined into one overall figure.
Children average two averages directly, such as averaging two speeds or two group averages, without weighting by how many, or how long, each part actually covers.
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