(C) Anyone falling in the lower part of the interquartile range has to clean up after the festival. (B) while the archers in the 1st quartile range have the unfortunate lot of being the ones upon whose heads the target apples will sit next year. (A) The archers in the 4th quartile range are rewarded by being automatically knighted and sent to look for the Holey Grail, However, in order to avoid the punishments, Romeo has to understand quartiles and interquartile range. Upon hearing that Juliet lives in the castle, Romeo is trying to find a way they can finally be together. The rules of the competition are a little bit different from the competitions Romeo usually enters. Romeo has entered an archery competition devised by the King based on quartiles. Where quartiles determine the archers' destinies." On a Medieval castle ground is where we lay our scene.įrom fierce competition break to new scrutiny, "Many archers, who all shoot brilliantly, Common CoreĬ.6.SP.B.5.C Let's practice: interquartile range, quartile range Exercises The interquartile range is used to construct box plots and to find outliers in a data set, thus giving a deeper understanding of the relationship of the data points and the data set as a whole. So for our example we have that IQR = Q3 – Q1 = 11 – 4 = 5. Lastly, compute the interquartile range (IQR) by subtracting Q1 from Q3.Note that when the data set has two middle values, then get the average of the two numbers in order to get the exact values of the quartiles. Given the data set above, the set 1,3,4,5,5 is the first half while 7,7,11,13,15 is the second half. Q1 is the median or middle value of the first half of the data set while Q3 is the median or middle value of the second half. Next, find the first quartile (Q1) and third quartile (Q3) of the given data set.First, arrange the data set into ascending order.The following steps are a big help in computing interquartile range: This video shows you an example on how to compute the interquartile range. The Interquartile Range is (IQR) = Q3 – Q1.
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