In the example above ... so to find the lower quartile, find \(\frac{1}{4}\) of 40, which is the 10th value. Reading from the graph, the lower quartile is 38. To find the upper quartile, find ...
Similarly, the lower quartile \({Q_2}\) divides the bottom half of the data into two halves, and the upper quartile \({Q ... Now try the example questions below.
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