A random sample of 20 people is classified in the following table according to their ages:
Age: 15–25 | Frequency: 2
Age: 25–35 | Frequency: 4
Age: 35–45 | Frequency: 6
Age: 45–55 | Frequency: 5
Age: 55–65 | Frequency: 3
What is the mean age of this group of people?
Mathematics
2016
NDA Mathematics 2016
NDA 2016
Options
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