Question: The following table shows a frequency distribution for grouped data. Notice that the frequency of scores, f(x), does not add up to 15. If a

The following table shows a frequency distribution for grouped data. Notice that the frequency of scores, f(x), does not add up to 15. If a total of 15 scores were actually counted, give a possible explanation for why the frequencies do not add up to 15.

Intervals Frequency 0-5 5-10 6 10-15 3 15-20 5

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