Interquartile range of 9 numbers 19,21,22,22,28,31,33,44,50
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You first need to find the quartiles. the median is 28. Q1 is 21.5. Q3 is 38.5.
To find the interquartile range, you have to take Q3 - Q1, multiply it by 1.5 and add it to Q3 and subtract it from Q1.
Q3-Q1 = 17
17 times 1.5 is 25.5.
The interquartile range is, there fore, is from 47 to 64.
To find the interquartile range, you have to take Q3 - Q1, multiply it by 1.5 and add it to Q3 and subtract it from Q1.
Q3-Q1 = 17
17 times 1.5 is 25.5.
The interquartile range is, there fore, is from 47 to 64.
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