- #1
Niles
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Homework Statement
Hi
Say I have the following bin sizes, where the number in paranthesis is the amount of data points contained in the bin:
20-29 : (2)
30-39 : (7)
40-49 : (12)
50-59 : (14)
How would I go about and find the mean for this binned data? I know that I should use
[tex]
mean = \frac{1}{N}\sum\limits_j {n_j x_j },
[/tex]
where bin j corresponds to a value xj and contains nj elements. But in my case, what are the values of the bins?