Researchers are collecting primary oral health data using th…
Researchers are collecting primary oral health data using the caries index DMFT. They collected data from a 9th grade classroom. There was a total of ten students who turned in their parental consent to participate in the study. The following DMFT scores were obtained: 1, 2, 5, 20, 5, 2, 6, 3, 4, 5 What is the grouped frequency, using intervals of 5 (1-5, 6-10, 11-15, and 16-20), for the second grouping?
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