1) I am a value that divided a rank-ordered data set into 4 equal parts. Who am I? 2) I am a value that divided a rank-ordered data set into 10 equal parts. Who am I? 3) I am a value that divided a rank-ordered data set into 100 equal parts. Who am I?  4) I am also called the "Lower Quartile". Who am I? 5) I am also called the "Upper Quartile". Who am I?

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