The interquartile range of the data set is 21.
Given that the heart rate of 10 adults is measured and the results are 83, 87, 90, 92, 93, 100, 104, 111, 115, 121.
The interquartile range shows the extent of the middle half of the distribution. Quartiles segment any distribution, ordered from low to high, into four equal parts. The interquartile range (IQR) contains the second and third interquartile ranges, the central half of the dataset.
The value of quartile 1 is Q₁=90
The value of quartile 3 is Q₃=111
So, the interquartile range is
IQR=Q₃-Q₁
IQR=111-90
IQR=21
Hence, the interquartile range of the data set 83, 87, 90, 92, 93, 100, 104, 111, 115, 121 is 21.
Learn more about the interquartile range from here brainly.com/qustion/18723655
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