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Mathematics 15 Online
OpenStudy (anonymous):

What is the first quartile of the data set below? 275, 257, 301, 218, 265, 242, 201 201 218 257 270

OpenStudy (anonymous):

> x<-c(275,257,301,218,265,242,201,201,218,257,270) > sort(x) [1] 201 201 218 218 242 257 257 265 270 275 301 Q1 Q2 The median, aka Q2, is the middle data point 257. Q1 id the median of the first half of the data, in this case 218. It is not entirely settled whether Q2 is in the first half of the data or not. In this case it doesn't matter.

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