In the data set below, what is the lower quartile? 1,2,4,2,5,6,7
A
1
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B
2
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C
4
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D
5
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Solution
The correct option is B2 First arrange the data set in order. 1,2,2,4,5,6,7 Here the median is the middle number =4 So, the lower quartile is the median of the lower half of the data. Then, the middle of the lower half will be 1,2,2 Therefore, the lower quartile is 2.