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Consider 500 measurements summarized in the accompanying frequency table Measurement 0.5-under 2.5 2.5-under 4.5 4.5-under 6.5 6.5-under 8.5 8.5-under 10.5 10.5-under 12.5 12.5-under 14.5 14.5-under 16.5 Class Frequency 50 75 125 100 25 50 50 25 What is the mean for this sample data? 7.5 7.3 9.1Consider the previous grouped sample data, what is the variance for this sample? 17.0 15.59 18.15 15.01

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