9. The cumulative frequency of the 4th bin in a frequency distribution table represents: a) the percentage of data that falls into the 4th bin b) the frequency of data values that are larger than the minimum value of the 4th bin c) the number of data values that are less than the maximum value of the 4th bin d) the relative proportion of data that is within 2 standard deviations of the mean e) the cumulative deviation of the 4th bin in percent

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A: the point estimate of standard deviation σ σ^=SSEn-2