Maths unit A:Quartiles 2.0 / 5 based on 2 ratings ? MathematicsData HandlingGCSEAll boards Created by: rvsnCreated on: 18-11-14 21:23 Before doing anything what must the data be? In order of lowest to highest 1 of 8 What must you first do in the data? Find the median piece of data 2 of 8 What is the lower quartile? All the numbers below the median 3 of 8 What is the upper quartile? All the numbers above the median 4 of 8 How do you find the interquartile range(IQR)? 1.Find the median of the lower quartile 2.Find the median of the upper quartile 3.Take away the lower quartile median from the upper quartile median 5 of 8 What are the labels for each quartile? Q =median of lower quartile Q =median of all data Q =median of upper quartile 6 of 8 Where is the lower quartile median? The piece of data a 1/4 of the way along the data set 7 of 8 Where is the upper quartile median? The piece of data 3/4 of the way along the data set 8 of 8
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