Why is the mean often an unreliable average for geographical data sets like house prices?
It always identifies the middle value, even when the data are not arranged in order.
It measures only the difference between the highest and lowest values in the data set.
It only considers the most frequent value, ignoring all the other values in the data set.
It is easily distorted by outliers (unusually high or low values).
Flashcards for AQA GCSE Geography Statistical skills, covering the key terms, case studies and geographical processes you need to recall for Paper 1, Paper 2 and Paper 3. 22 cards, matched to the AQA GCSE Geography (8035) specification. Recall questions account for roughly 15% of marks at GCSE Geography, so these target the marks you can secure before the paper starts.
