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    Approximate the Mean of the Group Data

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    Approximate the mean of the grouped data.
    The age distribution of students in a statistics class.
    Age frequency
    20-29 23
    30-39 24
    40-49 23
    50-59 19
    60-69 8
    What is the mean age of the students based on this given frequency distribution?
    Round to the nearest hundredth.

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    We can use the average of each age interval to estimate the mean, so we ...

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