AQA GCSE · Question 06.2 · Statistical Measures and Calculations
The mean mass of these 9 Vizslas is 23 kg. Calculate their mean height.
How to approach this question
To calculate the mean height, you need to:
1. Add up all the heights of the 9 dogs from the table.
2. Divide the total sum of the heights by the number of dogs, which is 9.
Full Answer
To find the mean height, we first sum the heights of all 9 dogs:\nSum of heights = 50 + 54 + 52 + 57 + 57 + 56 + 65 + 65 + 66 = 531 cm.\n\nNext, we divide this total by the number of dogs, which is 9:\nMean height = Total height / Number of dogs\nMean height = 531 / 9 = 59 cm.
Common mistakes
✗ Adding the masses instead of the heights.\n✗ Dividing by the wrong number (e.g., 6 instead of 9).\n✗ Making an error in the addition.
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