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प्रश्न
Ages of 15 students in 8th standard is 13, 12, 13, 14, 12, 13, 13, 14, 12, 13, 13, 14, 13, 12, 14. Find the mean age of the students
उत्तर
Aarithmetic Mean = `"Sum of all observations"/"Number of observations"`
= `(13 + 12 + 13 + 14 + 12 + 13 + 13 + 14 + 12 + 13 + 13 + 14 + 13 + 12 + 14)/15`
= `195/15`
= 13
Mean age of the students = 13
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