value So the upper quartile (UQ) is 18. The interquartile range (IQR) is therefore 18 - 4 = 14. You will notice that the fact there is an outlier in this data (60) which has had no bearing on the ...
Read across at 30 and down. The upper quartile is about 47 cm. The interquartile range is the upper quartile – the lower quartile, so for this data the interquartile range is \(47 – 38 = 9\).
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