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Lecture 7 Range, Quartiles and IQR - Mr. Manoo Murthy

Find the Range, Q1, Q3, and IQR of the following number set: 123, 146, 189, 198, 249, 267, 305, 336 Range = 213 Q 1 = 167.5 Q 3 = 286 IQR = 118.5 Predict the answer before you look! Five Number Summaries and Their Interpretation A five number summary is a quick and easy way to determine the spread of a data set.