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Gr. 12 Data Management 5. An average is taken of three students' marks but some of the data is lost! You remember the mean is

Gr. 12 Data Management

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5. An average is taken of three students' marks but some of the data is lost! You remember the mean is 82.1, and 2 of the marks were 90 and 75. What was the third mark? Show your work. (3 marks) 6. A set of data has an outlier at 155 and Q. = 110? What's the smallest possible value for Q1? Explain how you know

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